11 Geocoding Address Data

Geocoding is the process of associating spatial locations (longitude and latitude coordinates) with postal addresses. This chapter includes the following major sections:

Section 11.1, "Concepts for Geocoding"
Section 11.2, "Data Types for Geocoding"
Section 11.3, "Using the Geocoding Capabilities"
Section 11.4, "Geocoding from a Place Name"
Section 11.5, "Data Structures for Geocoding"
Section 11.7, "Using the Geocoding Service (XML API)"

11.1 Concepts for Geocoding

This section describes concepts that you must understand before you use the Spatial and Graph geocoding capabilities.

11.1.1 Address Representation

Addresses to be geocoded can be represented either as formatted addresses or unformatted addresses.

A formatted address is described by a set of attributes for various parts of the address, which can include some or all of those shown in Table 11-1.

Table 11-1 Attributes for Formal Address Representation

Address Attribute	Description
Name	Place name (optional).
Intersecting street	Intersecting street name (optional).
Street	Street address, including the house or building number, street name, street type (Street, Road, Blvd, and so on), and possibly other information. In the current release, the first four characters of the street name must match a street name in the geocoding data for there to be a potential street name match.
Settlement	The lowest-level administrative area to which the address belongs. In most cases it is the city. In some European countries, the settlement can be an area within a large city, in which case the large city is the municipality.
Municipality	The administrative area above settlement. Municipality is not used for United States addresses. In European countries where cities contain settlements, the municipality is the city.
Region	The administrative area above municipality (if applicable), or above settlement if municipality does not apply. In the United States, the region is the state; in some other countries, the region is the province.
Postal code	Postal code (optional if administrative area information is provided). In the United States, the postal code is the 5-digit ZIP code.
Postal add-on code	String appended to the postal code. In the United States, the postal add-on code is typically the last four numbers of a 9-digit ZIP code specified in "5-4" format.
Country	The country name or ISO country code.

Formatted addresses are specified using the SDO_GEO_ADDR data type, which is described in Section 11.2.1.

An unformatted address is described using lines with information in the postal address format for the relevant country. The address lines must contain information essential for geocoding, and they might also contain information that is not needed for geocoding (something that is common in unprocessed postal addresses). An unformatted address is stored as an array of strings. For example, an address might consist of the following strings: '22 Monument Square' and 'Concord, MA 01742'.

Unformatted addresses are specified using the SDO_KEYWORDARRAY data type, which is described in Section 11.2.3.

11.1.2 Match Modes

The match mode for a geocoding operation determines how closely the attributes of an input address must match the data being used for the geocoding. Input addresses can include different ways of representing the same thing (such as Street and the abbreviation St), and they can include minor errors (such as the wrong postal code, even though the street address and city are correct and the street address is unique within the city).

You can require an exact match between the input address and the data used for geocoding, or you can relax the requirements for some attributes so that geocoding can be performed despite certain discrepancies or errors in the input addresses. Table 11-2 lists the match modes and their meanings. Use a value from this table with the MatchMode attribute of the SDO_GEO_ADDR data type (described in Section 11.2.1) and for the match_mode parameter of a geocoding function or procedure.

Table 11-2 Match Modes for Geocoding Operations

Match Mode	Description
EXACT	All attributes of the input address must match the data used for geocoding. However, if the house or building number, base name (street name), street type, street prefix, and street suffix do not all match the geocoding data, a location in the first match found in the following is returned: postal code, city or town (settlement) within the state, and state. For example, if the street name is incorrect but a valid postal code is specified, a location in the postal code is returned.
RELAX_STREET_TYPE	The street type can be different from the data used for geocoding. For example, if Main St is in the data used for geocoding, Main Street would also match that, as would Main Blvd if there was no Main Blvd and no other street type named Main in the relevant area.
RELAX_POI_NAME	The name of the point of interest does not have to match the data used for geocoding. For example, if Jones State Park is in the data used for geocoding, Jones State Pk and Jones Park would also match as long as there were no ambiguities or other matches in the data.
RELAX_HOUSE_NUMBER	The house or building number and street type can be different from the data used for geocoding. For example, if 123 Main St is in the data used for geocoding, 123 Main Lane and 124 Main St would also match as long as there were no ambiguities or other matches in the data.
RELAX_BASE_NAME	The base name of the street, the house or building number, and the street type can be different from the data used for geocoding. For example, if Pleasant Valley is the base name of a street in the data used for geocoding, Pleasant Vale would also match as long as there were no ambiguities or other matches in the data.
RELAX_POSTAL_CODE	The postal code (if provided), base name, house or building number, and street type can be different from the data used for geocoding.
RELAX_BUILTUP_AREA	The address can be outside the city specified as long as it is within the same county. Also includes the characteristics of RELAX_POSTAL_CODE.
RELAX_ALL	Equivalent to RELAX_BUILTUP_AREA.
DEFAULT	Equivalent to RELAX_POSTAL_CODE.

11.1.3 Match Codes

The match code is a number indicating which input address attributes matched the data used for geocoding. The match code is stored in the MatchCode attribute of the output SDO_GEO_ADDR object (described in Section 11.2.1).

Table 11-3 lists the possible match code values.

Table 11-3 Match Codes for Geocoding Operations

Match Code	Description
1	Exact match: the city name, postal code, street base name, street type (and suffix or prefix or both, if applicable), and house or building number match the data used for geocoding.
2	The city name, postal code, street base name, and house or building number match the data used for geocoding, but the street type, suffix, or prefix does not match.
3	The city name, postal code, and street base name match the data used for geocoding, but the house or building number does not match.
4	The city name and postal code match the data used for geocoding, but the street address does not match.
10	The city name matches the data used for geocoding, but the postal code does not match.
11	The postal code matches the data used for geocoding, but the city name does not match.
12	The region matches the data in the geocoder schema, but the city name and postal code do not match.

11.1.4 Error Messages for Output Geocoded Addresses

Note:

You are encouraged to use the MatchVector attribute (see Section 11.1.5) instead of the ErrorMessage attribute, which is described in this section.

For an output geocoded address, the ErrorMessage attribute of the SDO_GEO_ADDR object (described in Section 11.2.1) contains a string that indicates which address attributes have been matched against the data used for geocoding. Before the geocoding operation begins, the string is set to the value ???????????281C??; and the value is modified to reflect which attributes have been matched.

Table 11-4 lists the character positions in the string and the address attribute corresponding to each position. It also lists the character value that the position is set to if the attribute is matched.

Table 11-4 Geocoded Address Error Message Interpretation

Position	Attribute	Value If Matched
1-2	(Reserved for future use)	??
3	Address point	X
4	POI name	O
5	House or building number	#
6	Street prefix	E
7	Street base name	N
8	Street suffix	U
9	Street type	T
10	Secondary unit	S
11	Built-up area or city	B
12-13	(Reserved)	(Ignore any values in these positions.)
14	Region	1
15	Country	C
16	Postal code	P
17	Postal add-on code	A

11.1.5 Match Vector for Output Geocoded Addresses

For an output geocoded address, the MatchVector attribute of the SDO_GEO_ADDR object (described in Section 11.2.1) contains a string that indicates how each address attribute has been matched against the data used for geocoding. It gives more accurate and detailed information about the match status of each address attribute than the ErrorMessage attribute (described in Section 11.1.4). Before the geocoding operation begins, the string is set to the value ?????????????????. Each character of this string indicates the match status of an address attribute.

Table 11-5 lists the character positions in the string and the address attribute corresponding to each position. Following the table is an explanation of what the value in each character position represents.

Table 11-5 Geocoded Address Match Vector Interpretation

Position	Attribute
1-2	(Reserved for future use)
3	Address point
4	POI name
5	House or building number
6	Street prefix
7	Street base name
8	Street suffix
9	Street type
10	Secondary unit
11	Built-up area or city
14	Region
15	Country
16	Postal code
17	Postal add-on code

Each character position in Table 11-5 can have one of the following possible numeric values:

0: The input attribute is not null and is matched with a non-null value.
1: The input attribute is null and is matched with a null value.
2: The input attribute is not null and is replaced by a different non-null value.
3: The input attribute is not null and is replaced by a null value.
4: The input attribute is null and is replaced by a non-null value.

11.2 Data Types for Geocoding

This section describes the data types specific to geocoding functions and procedures.

11.2.1 SDO_GEO_ADDR Type

The SDO_GEO_ADDR object type is used to describe an address. When a geocoded address is output by an SDO_GCDR function or procedure, it is stored as an object of type SDO_GEO_ADDR.

Table 11-6 lists the attributes of the SDO_GEO_ADDR type. Not all attributes will be relevant in any given case. The attributes used for a returned geocoded address depend on the geographical context of the input address, especially the country.

Table 11-6 SDO_GEO_ADDR Type Attributes

Attribute	Data Type	Description
Id	NUMBER	(Not used.)
AddressLines	SDO_KEYWORDARRAY	Address lines. (The SDO_KEYWORDARRAY type is described in Section 11.2.3.)
PlaceName	VARCHAR2(200)	Point of interest (POI) name. Example: CALIFORNIA PACIFIC MEDICAL CTR
StreetName	VARCHAR2(200)	Street name, including street type. Example: MAIN ST
IntersectStreet	VARCHAR2(200)	Intersecting street.
SecUnit	VARCHAR2(200)	Secondary unit, such as an apartment number or building number.
Settlement	VARCHAR2(200)	Lowest-level administrative area to which the address belongs. (See Table 11-1.)
Municipality	VARCHAR2(200)	Administrative area above settlement. (See Table 11-1.)
Region	VARCHAR2(200)	Administrative area above municipality (if applicable), or above settlement if municipality does not apply. (See Table 11-1.)
Country	VARCHAR2(100)	Country name or ISO country code.
PostalCode	VARCHAR2(20)	Postal code (optional if administrative area information is provided). In the United States, the postal code is the 5-digit ZIP code.
PostalAddOnCode	VARCHAR2(20)	String appended to the postal code. In the United States, the postal add-on code is typically the last four numbers of a 9-digit ZIP code specified in "5-4" format.
FullPostalCode	VARCHAR2(20)	Full postal code, including the postal code and postal add-on code.
POBox	VARCHAR2(100)	Post Office box number.
HouseNumber	VARCHAR2(100)	House or building number. Example: 123 in 123 MAIN ST
BaseName	VARCHAR2(200)	Base name of the street. Example: MAIN in 123 MAIN ST
StreetType	VARCHAR2(20)	Type of the street. Example: ST in 123 MAIN ST
StreetTypeBefore	VARCHAR2(1)	(Not used.)
StreetTypeAttached	VARCHAR2(1)	(Not used.)
StreetPrefix	VARCHAR2(20)	Prefix for the street. Example: S in 123 S MAIN ST
StreetSuffix	VARCHAR2(20)	Suffix for the street. Example: NE in 123 MAIN ST NE
Side	VARCHAR2(1)	Side of the street (`L` for left or `R` for right) that the house is on when you are traveling along the road segment following its orientation (that is, from its start node toward its end node). The house numbers may be increasing or decreasing.
Percent	NUMBER	Number from 0 to 1 (multiply by 100 to get a percentage value) indicating how far along the street you are when traveling following the road segment orientation.
EdgeID	NUMBER	Edge ID of the road segment.
ErrorMessage	VARCHAR2(20)	Error message (see Section 11.1.4). Note: You are encouraged to use the `MatchVector` attribute instead of the `ErrorMessage` attribute.
MatchCode	NUMBER	Match code (see Section 11.1.3).
MatchMode	VARCHAR2(30)	Match mode (see Section 11.1.2).
Longitude	NUMBER	Longitude coordinate value.
Latitude	NUMBER	Latitude coordinate value.
MatchVector	VARCHAR2(20)	A string that indicates how each address attribute has been matched against the data used for geocoding (see Section 11.1.5).

You can return the entire SDO_GEO_ADDR object, or you can specify an attribute using standard "dot" notation. Example 11-1 contains statements that geocode the address of the San Francisco City Hall; the first statement returns the entire SDO_GEO_ADDR object, and the remaining statements return some specific attributes.

Example 11-1 Geocoding, Returning Address Object and Specific Attributes

SELECT SDO_GCDR.GEOCODE('SCOTT', 
  SDO_KEYWORDARRAY('1 Carlton B Goodlett Pl', 'San Francisco, CA  94102'), 
    'US', 'RELAX_BASE_NAME') FROM DUAL;
 
SDO_GCDR.GEOCODE('SCOTT',SDO_KEYWORDARRAY('1CARLTONBGOODLETTPL','SANFRANCISCO
--------------------------------------------------------------------------------
SDO_GEO_ADDR(0, SDO_KEYWORDARRAY(), NULL, 'CARLTON B GOODLETT PL', NULL, NULL, '
SAN FRANCISCO', NULL, 'CA', 'US', '94102', NULL, '94102', NULL, '1', 'CARLTON B
GOODLETT', 'PL', 'F', 'F', NULL, NULL, 'L', .01, 23614360, '????#ENUT?B281CP?',
1, 'RELAX_BASE_NAME', -122.41815, 37.7784183, '????0101010??000?')

SELECT SDO_GCDR.GEOCODE('SCOTT',
  SDO_KEYWORDARRAY('1 Carlton B Goodlett Pl', 'San Francisco, CA  94102'),
  'US', 'RELAX_BASE_NAME').StreetType  FROM DUAL;
 
SDO_GCDR.GEOCODE('SCOTT',SDO_KEYWORDARRAY('1CARLTONBGOODLETTPL','SANFRANCISCO
--------------------------------------------------------------------------------
PL                                                                              
 
SELECT SDO_GCDR.GEOCODE('SCOTT',
  SDO_KEYWORDARRAY('1 Carlton B Goodlett Pl', 'San Francisco, CA  94102'),
  'US', 'RELAX_BASE_NAME').Side  RROM DUAL;
 
S                                                                               
-                                                                               
L                                                                               
 
SELECT SDO_GCDR.GEOCODE('SCOTT',
  SDO_KEYWORDARRAY('1 Carlton B Goodlett Pl', 'San Francisco, CA  94102'),
  'US', 'RELAX_BASE_NAME').Percent  FROM DUAL;
 
SDO_GCDR.GEOCODE('SCOTT',SDO_KEYWORDARRAY('1CARLTONBGOODLETTPL','SANFRANCISCO
--------------------------------------------------------------------------------
                                                                             .01
 
SELECT SDO_GCDR.GEOCODE('SCOTT',
  SDO_KEYWORDARRAY('1 Carlton B Goodlett Pl', 'San Francisco, CA  94102'),
  'US', 'RELAX_BASE_NAME').EdgeID  FROM DUAL;
 
SDO_GCDR.GEOCODE('SCOTT',SDO_KEYWORDARRAY('1CARLTONBGOODLETTPL','SANFRANCISCO
--------------------------------------------------------------------------------
                                                                        23614360
 
SELECT SDO_GCDR.GEOCODE('SCOTT',
  SDO_KEYWORDARRAY('1 Carlton B Goodlett Pl', 'San Francisco, CA  94102'),
  'US', 'RELAX_BASE_NAME').MatchCode  FROM DUAL;
 
SDO_GCDR.GEOCODE('SCOTT',SDO_KEYWORDARRAY('1CARLTONBGOODLETTPL','SANFRANCISCO
--------------------------------------------------------------------------------
                                                                               1

SELECT SDO_GCDR.GEOCODE('SCOTT',
  SDO_KEYWORDARRAY('1 Carlton B Goodlett Pl', 'San Francisco, CA  94102'),
  'US', 'RELAX_BASE_NAME').MatchVector  FROM DUAL;
 
SDO_GCDR.GEOCODE('SC
--------------------
????0101010??000?

11.2.2 SDO_ADDR_ARRAY Type

The SDO_ADDR_ARRAY type is a VARRAY of SDO_GEO_ADDR objects (described in Section 11.2.1) used to store geocoded address results. Multiple address objects can be returned when multiple addresses are matched as a result of a geocoding operation.

The SDO_ADDR_ARRAY type is defined as follows:

CREATE TYPE sdo_addr_array AS VARRAY(1000) OF sdo_geo_addr;

11.2.3 SDO_KEYWORDARRAY Type

The SDO_KEYWORDARRAY type is a VARRAY of VARCHAR2 strings used to store address lines for unformatted addresses. (Formatted and unformatted addresses are described in Section 11.1.1.)

The SDO_KEYWORDARRAY type is defined as follows:

CREATE TYPE sdo_keywordarray AS VARRAY(10000) OF VARCHAR2(9000);

11.3 Using the Geocoding Capabilities

To use the Oracle Spatial and Graph geocoding capabilities, you must use data provided by a geocoding vendor, and the data must be in the format supported by the Oracle Spatial and Graph geocoding feature. For information about geocoding, go to:

database/options

To geocode an address using the geocoding data, use the SDO_GCDR PL/SQL package subprograms, which are documented in Chapter 22:

The SDO_GCDR.GEOCODE function geocodes an unformatted address to return an SDO_GEO_ADDR object.
The SDO_GCDR.GEOCODE_ADDR function geocodes an input address using attributes in an SDO_GEO_ADDR object, and returns the first matched address as an SDO_GEO_ADDR object.
The SDO_GCDR.GEOCODE_ADDR_ALL function geocodes an input address using attributes in an SDO_GEO_ADDR object, and returns matching addresses as an SDO_ADDR_ARRAY object.
The SDO_GCDR.GEOCODE_AS_GEOMETRY function geocodes an unformatted address to return an SDO_GEOMETRY object.
The SDO_GCDR.GEOCODE_ALL function geocodes all addresses associated with an unformatted address and returns the result as an SDO_ADDR_ARRAY object (an array of address objects).
The SDO_GCDR.REVERSE_GEOCODE function reverse geocodes a location, specified by its spatial geometry object and country, and returns the result as an SDO_GEO_ADDR object.

11.4 Geocoding from a Place Name

If you know a place name (point of interest) but not its locality details, you can create a PL/SQL function to construct an SDO_GEO_ADDR object from placename and country input parameters, as shown in Example 11-2, which creates a function named create_addr_from_placename. The SELECT statement in this example uses the SDO_GCDR.GEOCODE_ADDR function to geocode the address constructed using the create_addr_from_placename function.

Example 11-2 Geocoding from a Place Name and Country

create or replace function create_addr_from_placename(
placename varchar2,
country varchar2)
return sdo_geo_addr
deterministic
as
  addr sdo_geo_addr ;
  begin
  addr := sdo_geo_addr() ;
  addr.country := country ;
  addr.placename := placename ;
  addr.matchmode := 'default' ;
  return addr ;
  end;
  /
 
SELECT sdo_gcdr.geocode_addr('SCOTT', 
  create_addr_from_placename('CALIFORNIA PACIFIC MEDICAL CTR', 'US')) 
FROM DUAL;

If you know at least some of the locality information, such as settlement, region, and postal code, you can get better performance if you can provide such information. Example 11-3 provides an alternate version of the create_addr_from_placename function that accepts additional parameters. To call this version of the function, specify actual values for the placename and country parameters, and specify an actual value or a null value for each of the other input parameters.

Example 11-3 Geocoding from a Place Name, Country, and Other Fields

create or replace function create_addr_from_placename(
placename varchar2,
city varchar2,
state varchar2,
postalcode varchar2,
country varchar2)
return sdo_geo_addr
deterministic
as
  addr sdo_geo_addr ;
  begin
  addr := sdo_geo_addr() ;
  addr.settlement := city ;
  addr.region := state ;
  addr.postalcode := postalcode ;
  addr.country := country ;
  addr.placename := placename ;
  addr.matchmode := 'default' ;
  return addr ;
  end;
  /
 
SELECT sdo_gcdr.geocode_addr('SCOTT', 
  create_addr_from_placename('CALIFORNIA PACIFIC MEDICAL CTR', 
    'san francisco', 'ca', null, 'US')) FROM DUAL;

11.5 Data Structures for Geocoding

Oracle uses the following tables for geocoding:

GC_PARSER_PROFILES
GC_PARSER_PROFILEAFS
GC_COUNTRY_PROFILE
GC_AREA_<suffix>
GC_POSTAL_CODE_<suffix>
GC_ROAD_SEGMENT_<suffix>
GC_ROAD_<suffix>
GC_POI_<suffix>
GC_INTERSECTION_<suffix>

The GC_PARSER_PROFILES and GC_PARSER_PROFILEAFS tables store address format definitions of all supported counties. These tables are used by the internal address parser in parsing postal addresses into addressing fields. The data for these two tables is provided by your data provider or by Oracle. (If these tables are not supplied by your data provider, you will need to install and populate them as explained in Section 11.6.) The remaining tables store geocoding data provided by data vendors.

Each user that owns the tables containing geocoding data (that is, each user that can be specified with the username parameter in a call to an SDO_GCDR subprogram) must have one GC_PARSER_PROFILES table, one GC_PARSER_PROFILEAFS table, and one GC_COUNTRY_PROFILE table. Each such user can have multiple sets of the other tables (GC_xxx_<suffix>). Each set of tables whose names end with the same suffix stores geocoding data of a country. For example, the following set of tables can be used to store geocoding data of the United States:

GC_AREA_US
GC_POSTAL_CODE_US
GC_ROAD_SEGMENT_US
GC_ROAD_US
GC_POI_US
GC_INTERSECTION_US

Geocoding data of one country cannot be stored in more than one set of those tables. The table suffix is defined by data venders and is specified in the GC_TABLE_SUFFIX column in the GC_COUNTRY_PROFILE table (described in Section 11.5.3).

The following sections describe the vendor-supplied tables that store geocoding data, in alphabetical order by table name.

Section 11.5.11 describes the indexes that you must create in order to use these tables for geocoding.

11.5.1 GC_ADDRESS_POINT_<suffix> Table and Index

The GC_ADDRESS_POINT_<suffix> table (for example, GC_ADDRESS_POINT_US) stores the geographic (latitude, longitude) coordinates for addresses in the country or group of countries associated with the table-name suffix. This table is not required for geocoding (although it is required for point-based geocoding); however, it enables the geocoder to provide more accurate location results. It is automatically used when present in the schema. This table contains one row for each address stored in the table, and it contains the columns shown in Table 11-7.

Table 11-7 GC_ADDRESS_POINT_<suffix> Table

Column Name	Data Type	Description
ADDRESS_POINT_ID	NUMBER(10)	ID number of the address point. (Required)
ROAD_ID	NUMBER	ID number of the road on which the address point is located. (Required)
ROAD_SEGMENT_ID	NUMBER(10)	ID number of the road segment on the road on which the address point is located. (Required)
SIDE	VARCHAR2(1)	Side of the road on which the address point is located. Possible values: `L` (left) or `R` (right). (Required)
LANG_CODE	VARCHAR2(3)	3-letter ISO national language code for the language associated with the address point. (Required) point
HOUSE_NUMBER	VARCHAR2(600 CHAR)	House number of the address point; may contain non-numeric characters. (Required)
PERCENT	NUMBER	Decimal fraction of the length of the road segment on which the address point is located. It is computed by dividing the distance from the segment start point to the address point by the length of the road segment. (Required).
ADDR_LONG	NUMBER(10)	Longitude coordinate value of the address point. (Required)
ADDR_LAT	NUMBER(10)	Latitude coordinate value of the address point. (Required)
COUNTRY_CODE_2	VARCHAR2(2)	2- letter ISO country code of the country to which the address point belongs. (Required)
PARTITION_ID	NUMBER	Partition key used for partitioning geocoder data by geographic boundaries. If the data is not partitioned, set the value to 1. (Required)

If you use the GC_ADDRESS_POINT_<suffix> table, you must create an index on the table using a statement in the following form:

CREATE INDEX idx_<suffix>_addrpt_addr ON gc_address_point_<suffix> (road_segment_id, road_id, house_number, side);

11.5.2 GC_AREA_<suffix> Table

The GC_AREA_<suffix> table (for example, CG_AREA_US) stores administration area information for the country associated with the table name suffix. This table contains one row for each administration area, and it contains the columns shown in Table 11-8.

Table 11-8 GC_AREA_<suffix> Table

Column Name	Data Type	Description
AREA_ID	NUMBER(10)	Area ID number. (Required)
AREA_NAME	VARCHAR2(64)	Area name. (Required)
LANG_CODE	VARCHAR2(3)	3-letter ISO national language code for the language associated with the area. (Required)
ADMIN_LEVEL	NUMBER(1)	Administration hierarchy level for the area. (Required)
LEVEL1_AREA_ID	NUMBER(10)	ID of the level-1 area to which the area belongs. In the administration hierarchy, the level-1 area is the country. (Required)
LEVEL2_AREA_ID	NUMBER(10)	ID of the level-2 area to which the area belongs, if applicable. You must specify an area ID for each level in the administration hierarchy to which this area belongs. (Optional)
LEVEL3_AREA_ID	NUMBER(10)	ID of the level-3 area to which the area belongs, if applicable. You must specify an area ID for each level in the administration hierarchy to which this area belongs. (Optional)
LEVEL4_AREA_ID	NUMBER(10)	ID of the level-4 area to which the area belongs, if applicable. You must specify an area ID for each level in the administration hierarchy to which this area belongs. (Optional)
LEVEL5_AREA_ID	NUMBER(10)	ID of the level-5 area to which the area belongs, if applicable. You must specify an area ID for each level in the administration hierarchy to which this area belongs. (Optional)
LEVEL6_AREA_ID	NUMBER(10)	ID of the level-6 area to which the area belongs, if applicable. You must specify an area ID for each level in the administration hierarchy to which this area belongs. (Optional)
LEVEL7_AREA_ID	NUMBER(10)	ID of the level-7 area to which the area belongs, if applicable. You must specify an area ID for each level in the administration hierarchy to which this area belongs. (Optional)
CENTER_LONG	NUMBER	Longitude value of the center of the area. The center is set to the closest road segment to the center longitude and latitude values. Oracle recommends that these two attributes be set properly. If these values are not set, the longitude and latitude coordinates of the geocoded result of an area will be (0,0). (Optional)
CENTER_LAT	NUMBER	Latitude value of the center of the area. (See the explanation for the CENTER_LONG column.) (Optional)
ROAD_SEGMENT_ID	NUMBER(10)	ID of the road segment to which the area center is set. This value must be set correctly if the geocoder is intended to work with the Oracle Spatial and Graph routing engine (described in Chapter 13); otherwise, it can be set to any nonzero value, but it cannot be null. (Required)
POSTAL_CODE	VARCHAR2(16)	Postal code for the center of the area. Oracle recommends that this attribute be set correctly. If this value is null, the postal code attribute of the geocoded result of an area will be null. (Optional)
COUNTRY_CODE_2	VARCHAR2(2)	2- letter ISO country code of the country to which the area belongs. (Required)
PARTITION_ID	NUMBER	Partition key used for partitioning geocoder data by geographic boundaries. If the data is not partitioned, set the value to 1. (Required)
REAL_NAME	VARCHAR2(64)	The real name of the area, as spelled using the local language. This column is useful for area names that are not in English. For example, the German name of city `MUNICH` is `MÜNCHEN`. It is allowed to be spelled as `MUNCHEN`, but its REAL_NAME value should be `MÜNCHEN`. In the area table for Germany, areas with name `MÜNCHEN` and `MUNCHEN` both refer to the same area, and they both have the same real name `MÜNCHEN`. If the area name does not have any non-English characters, set REAL_NAME to be the same as AREA_NAME. (Required)
IS_ALIAS	VARCHAR2(1)	Contains `T` if this area is an alias of another area that is an officially recognized administrative area; contains `F` if this area is not an alias of another area that is an officially recognized administrative area. For example, Manhattan is not an officially recognized administrative area, but it is used by the public to refer to a part of New York City. In this case, `Manhattan` is an alias of `New York City`. (Required)
NUM_STREETS	NUMBER	The number of streets inside this area. (Optional)

11.5.3 GC_COUNTRY_PROFILE Table

The GC_COUNTRY_PROFILE table stores country profile information used by the geocoder. This information includes administrative-area hierarchy definitions, the national languages, and the table-name suffix used by the data tables and their indexes. This table contains one row for each supported country, and it contains the columns shown in Table 11-9.

Table 11-9 GC_COUNTRY_PROFILE Table

Column Name	Data Type	Description
COUNTRY_NAME	VARCHAR2(60)	Country name. (Required)
COUNTRY_CODE_3	VARCHAR2(3)	3- letter ISO country code. (Required)
COUNTRY_CODE_2	VARCHAR2(2)	2- letter ISO country code. (Required)
LANG_CODE_1	VARCHAR2(3)	3-letter ISO national language code. Some countries might have multiple national languages, in which case LANG_CODE_2 and perhaps other LANG_CODE_n columns should contain values. (Required)
LANG_CODE_2	VARCHAR2(3)	3-letter ISO national language code. (Optional)
LANG_CODE_3	VARCHAR2(3)	3-letter ISO national language code. (Optional)
LANG_CODE_4	VARCHAR2(3)	3-letter ISO national language code. (Optional)
NUMBER_ADMIN_LEVELS	NUMBER(1)	Number of administration hierarchy levels. A country can have up to 7 administration area levels, numbered from 1 to 7 (largest to smallest). The top level area (country) is level 1. For the United States, the administration hierarchy is as follows: level 1 = country, level 2 = state, level 3 = county, level 4 = city. (Required)
SETTLEMENT_LEVEL	NUMBER(1)	Administration hierarchy level for a settlement, which is the lowest area level used in addressing. In the United States, this is the city level; in Europe, this is generally a subdivision of a city (level 5). (Required)
MUNICIPALITY_LEVEL	NUMBER(1)	Administration hierarchy level for a municipality, which is the second-lowest area level used in addressing. In the United States, this is the county (level 3); in Europe, this is generally a city (level 4). (Optional)
REGION_LEVEL	NUMBER(1)	Administrative level for the region, which is above the municipality level. In the United States, this is the state or third-lowest area level used in addressing (level 2); in Europe, this is a recognized subdivision of the country (level 2 or level 3). (Optional)
SETTLEMENT_IS_OPTIONAL	VARCHAR2(1)	Contains `T` if settlement information is optional in the address data; contains `F` if settlement information is not optional (that is, is required) in the address data. (Required)
MUNICIPALITY_IS_OPTIONAL	VARCHAR2(1)	Contains `T` if municipality information is optional in the address data; contains `F` if municipality information is not optional (that is, is required) in the address data. (Required)
REGION_IS_OPTIONAL	VARCHAR2(1)	Contains `T` if region information is optional in the address data; contains `F` if region information is not optional (that is, is required) in the address data. (Required)
POSTCODE_IN_SETTLEMENT	VARCHAR(1)	Contains `T` if each postal code must be completely within a settlement area; contains `F` if a postal code can include areas from multiple settlements. (Required)
SETTLEMENT_AS_CITY	VARCHAR(1)	Contains `T` if a city name can identify both a municipality and a settlement; contains `F` if a city name can identify only a settlement. For example, in the United Kingdom, London can be both the name of a municipality area and the name of a settlement area, which is inside the municipality of London. This is common in large cities in some European countries, such as the UK and Belgium. (Required)
CACHED_ADMIN_AREA_LEVEL	NUMBER	(Reserved for future use.)
GC_TABLE_SUFFIX	VARCHAR2(5)	Table name suffix identifying the country for the GC_* data tables. For example, if the value of GC_TABLE_SUFFIX is `US`, the names of tables with geocoding data for this country end with `_US` (for example, CG_AREA_US). (Required)
CENTER_LONG	NUMBER	Longitude value of the center of the area. (Optional)
CENTER_LAT	NUMBER	Latitude value of the center of the area. (Optional)
SEPARATE_PREFIX	VARCHAR2(1)	Contains `T` if the street name prefix is a separate word from the street name; contains `F` if the street name prefix is in the same word with the street name. For example, in an American street address of `123 N Main St`, the prefix is `N`, and it is separate from the street name, which is `Main`. (Optional; not currently used by Oracle)
SEPARATE_SUFFIX	VARCHAR2(1)	Contains `T` if the street name suffix is a separate word from the street name; contains `F` if the street name suffix is in the same word with the street name. For example, in an American street address of `123 Main St NW`, the suffix is `NW`, and it is separate from the street name, which is `Main`, and from the street type, which is `St`. (Optional; not currently used by Oracle)
SEPARATE_STYPE	VARCHAR2(1)	Contains `T` if the street type is a separate word from the street name; contains `F` if the street type is in the same word with the street name. For example, in a German street address of `123 Beethovenstrass`, the type is `strass`, and it is in the same word with the street name, which is `Beethoven`. (Optional; not currently used by Oracle)
AREA_ID	NUMBER	Not currently used by Oracle. (Optional)
VERSION	VARCHAR2(10)	Version of the data. The first version should be `1.0`. (Required)

11.5.4 GC_INTERSECTION_<suffix> Table

The GC_INTERSECTION_<suffix> table (for example, GC_INTERSECTION_US) stores information on road intersections for the country or group of countries associated with the table-name suffix. An intersection occurs when roads meet or cross each other. This table contains the columns shown in Table 11-10.

Table 11-10 GC_INTERSECTION_<suffix> Table

Column Name	Data Type	Description
ROAD_ID_1	NUMBER	ID number of the first road on which the intersection is located. (Required)
ROAD_SEGMENT_ID_1	NUMBER	ID number of the road segment on the first road on which the intersection is located. (Required)
ROAD_ID_2	NUMBER	ID number of the second road on which the intersection is located. (Required)
ROAD_SEGMENT_ID_2	NUMBER	ID number of the road segment on the second road on which the intersection is located. (Required)
INTS_LONG	NUMBER	Longitude coordinate value of the intersection. (Required)
INTS_LAT	NUMBER	Latitude coordinate value of the intersection. (Required)
HOUSE_NUMBER	NUMBER	The leading numerical part of the house number at the intersection. (See the explanation of house numbers after Table 11-16 in Section 11.5.10.) (Required)
HOUSE_NUMBER_2	VARCHAR2(10)	The second part of the house number at the intersection. (See the explanation of house numbers after Table 11-16 in Section 11.5.10.) (Required)
SIDE	VARCHAR2(1)	Side of the street on which the house at the intersection is located. Possible values: `L` (left) or `R` (right). (Required)
COUNTRY_CODE_2	VARCHAR2(2)	2- letter ISO country code of the country to which the house at the intersection belongs. (Required)
PARTITION_ID	NUMBER	Partition key used for partitioning geocoder data by geographic boundaries. If the data is not partitioned, set the value to 1. (Required)

11.5.5 GC_PARSER_PROFILES Table

The GC_PARSER_PROFILES table stores information about keywords typically found in postal addresses. The geocoder uses keywords to identify address fields, such as house number, road name, city name, state name, and postal code. A keyword can be the type of street (such as road, street, drive, or avenue) or the prefix or suffix of a street (such as north, south, east, or west). This table contains the columns shown in Table 11-11.

Table 11-11 GC_PARSER_PROFILES Table

Column Name	Data Type	Description
COUNTRY_CODE	VARCHAR2(2)	2- letter ISO country code of the country for the keyword. (Required)
KEYWORDS	SDO_KEYWORDARRAY	A single array of keywords for a specific address field. The array may contain a single word, or a group of words and abbreviations that can be used with the same meaning; for example, United States of America, USA, and United States all refer to the US. The first word of this array should be the official full name of the keyword, if there is any. The US uses over 400 keywords in parsing addresses. The following are some examples of keyword arrays and keywords from the US data set; however, only a single SDO_KEYWORDARRAY object is stored in each row: SDO_KEYWORDARRAY( 'UNITED STATES OF AMERICA','US', 'USA', 'UNITED STATES', 'U.S.A.', 'U.S.') SDO_KEYWORDARRAY('AVENUE','AV', 'AVE', 'AVEN', 'AVENU', 'AVN', 'AVNUE', 'AV.','AVE.') SDO_KEYWORDARRAY('40TH', 'FORTIETH') SDO_KEYWORDARRAY('NEW YORK','NY') SDO_KEYWORDARRAY('LIBRARY')
OUTPUT_KEYWORD	VARCHAR2(2000)	A keyword used in the geocoder data to represent an address field. It must be the same as one of the keywords used in the keyword array. The output keyword is used to match the addresses stored in the geocoding data tables to the user's input, for example, if the output keyword `AV` is used for street type `Avenue` in the GC_ROAD_US table, wherever a user enters an address containing any of the keywords (AVENUE, AV, AVE, AVEN, AVENU, AVN, AVNUE, AV., AVE.), the keyword will be interpreted and matched to the output keyword `AV` to help find the address in the database The following are some examples of output keywords; however, only a single output keyword is stored in each row: `US` `AV` `40TH` `NY` `LIBRARY`
SECTION_LABEL	VARCHAR2(30)	A label used to identify the type of keyword represented in the KEYWORDS and OUTPUT_KEYWORD columns. There are the multiple different section labels; however, only a single section label for each row is used in identifying the type of keywords: COUNTRY_NAME: Identifies keywords that are used to represent country names. LOCALITY_KEYWORD_DICTIONARY: Identifies keywords that are used to replace words in a locality (city, state, province, and so on) with a standardized form of the word. For example, Saint is replaced by St; and by doing so, the city names Saint Thomas and St. Thomas will be standardized to St Thomas, which is stored in the database. PLACE_NAME_KEYWORD: Identifies a point of interest (POI) name keyword, such as for a restaurant or a hotel. REGION_LIST: Identifies keywords that are known names of regions, such as NY, New York, NH, and New Hampshire. The regions identified must be administrative areas that belong to the third-lowest area level or third-smallest area used in addressing. In the US this is the state level (the lowest area level or smallest area is the city level). SECOND_UNIT_KEYWORD: Identifies keywords used in second-unit descriptions, such as Floor, #, Suite, and Apartment. STREET_KEYWORD_DICTIONARY: Identifies keywords used to replace non-street-type keywords in street names (such as 40TH and Fortieth) with a standardized form. STREET_PREFIX_KEYWORD: Identifies street name prefix keywords, such as South, North, West, and East. STREET_TYPE_KEYWORD: Identifies street type keywords, such as Road, Street, and Drive. IN_LINE_STREET_TYPE_KEYWORD: Identifies street type keywords that are attached to street names, such as strasse in the German street name Steinstrasse.
POSITION	VARCHAR2(1)	The position of the keyword relative to a street name. It indicates whether the keyword can precede (`P`) or follow (`F`) the actual street name, or both (`B`). Thus, `P`, `F`, and `B` are the only valid entries. In the US, most street type keywords follow the street names, for example, the street type `Blvd` in Hollywood Blvd. In France, however, street type keywords usually precede the street names, for example, the street type `Avenue` in Avenue De Paris.
SEPARATENESS	VARCHAR2(1)	Indicates whether the keyword is separate from a street name. Keywords are either separable (`S`) or non-separable (`N`). Thus, `S` and `N` are the only valid entries. In the US, all street-type keywords are separate words from the street name, for example, the street type `Blvd` in Hollywood Blvd. In Germany, however, the street-type keywords are not separate from the street name, for example, the street type `strasse` in Augustenstrasse.

11.5.6 GC_PARSER_PROFILEAFS Table

The GC_PARSER_PROFILEAFS table stores the XML definition of postal-address formats. An XML string describes each address format for a specific country. In the Oracle Geocoder 10g and earlier, the J2EE geocoder uses a country_name.ppr file instead of this table. The content of the country_name.ppr file is equivalent to the content of the ADDRESS_FORMAT_STRING attribute. This table contains the columns shown in Table 11-12.

Table 11-12 GC_PARSER_PROFILEAFS Table

Column Name	Data Type	Description
COUNTRY_CODE	VARCHAR2(2)	2- letter ISO country code of the country. (Required)
ADDRESS_FORMAT_STRING	CLOB	XML string describing the address format for the country specified in the COUNTRY_CODE column. (Example 11-4 shows the XML definition for the US address format, and Section 11.5.6.1 explains the elements used in the US address format definition.).

Example 11-4 shows the ADDRESS_FORMAT_STRING definition for the US address format.

Example 11-4 XML Definition for the US Address Format

<address_format unit_separator="," replace_hyphen="true">
 <address_line>
   <place_name />
 </address_line>
 <address_line>
   <street_address>
     <house_number>
       <format form="0*" effective="0-1" output="$" />
       <format form="0*1*" effective="0-1" output="$">
         <exception form="0*TH" />
         <exception form="0*ST" />
         <exception form="0*2ND" />
         <exception form="0*3RD" />
       </format>
       <format form="0*10*" effective="0-1" output="$" />
       <format form="0*-0*" effective="0-1" output="$" />
       <format form="0*.0*" effective="0-1" output="$" />
       <format form="0* 0*/0*" effective="0-1" output="$" />
     </house_number>
     <street_name>
       <prefix />
       <base_name />
        <suffix />
       <street_type />
       <special_format>
   <format form="1* HWY 0*" effective="7-8" addon_effective="0-1" addon_output="$ HWY"/>
   <format form="1* HIGHWAY 0*" effective="11-12" addon_effective="0-1" addon_output="$ HWY"/>
   <format form="1* HWY-0*" effective="7-8" addon_effective="0-1" addon_output="$ HWY"/>
   <format form="1* HIGHWAY-0*" effective="11-12" addon_effective="0-1" addon_output="$ HWY"/>
         <format form="HWY 0*" effective="4-5" addon_output="HWY" />
         <format form="HIGHWAY 0*" effective="8-9" addon_output="HWY" />
         <format form="ROUTE 0*" effective="6-7" addon_output="RT" />
         <format form="I 0*" effective="2-3" addon_output="I" />
         <format form="11 0*" effective="3-4" addon_effective="0-1" />
         <format form="I0*" effective="1-2" addon_output="I" />
         <format form="I-0*" effective="2-3" addon_output="I" />
         <format form="11-0*" effective="3-4" addon_effective="0-1" />
         <format form="ROUTE-0*" effective="6-7" addon_output="RT" />
         <format form="US0*" effective="2-3" addon_output="US" />
         <format form="HWY-0*" effective="2-3" addon_output="US" />
         <format form="HIGHWAY-0*" effective="8-9" addon_output="HWY" />
       </special_format>
     </street_name>
     <second_unit>
       <special_format>
         <format form="# 0*" effective="2-3" output="APT $" />
         <format form="#0*" effective="1-2" output="APT $" />
       </special_format>
     </second_unit>
   </street_address>
 </address_line>
 <address_line>
   <po_box>
     <format form="PO BOX 0*" effective="7-8" />
     <format form="P.O. BOX 0*" effective="9-10" />
     <format form="PO 0*" effective="3-4" />
     <format form="P.O. 0*" effective="5-6" />
     <format form="POBOX 0*" effective="6-7" />
   </po_box>
 </address_line>
 <address_line>
   <city optional="no" />
   <region optional="no" order="1" />
   <postal_code>
     <format form="00000" effective="0-4" />
     <format form="00000-0000" effective="0-4" addon_effective="6-9" />
     <format form="00000 0000" effective="0-4" addon_effective="6-9" />
   </postal_code>
 </address_line>
</address_format>

11.5.6.1 ADDRESS_FORMAT_STRING Description

The ADDRESS_FORMAT_STRING column of the GC_PARSER_PROFILEAFS table describes the format of address fields and their positioning in valid postal addresses. The address format string is organized by address lines, because postal addresses are typically written in multiple address lines.

The address parser uses the format description defined in the XML address format, combined with the keyword definition for each address field defined in the GC_PARSER_PROFILES table, to parse the input address and identify individual address fields.

<address_format> Element

The <address_format> element includes the unit_separator and replace_hyphen attributes. The unit_separator attribute is used to separate fields in the stored data. By default it is a comma (unit_separator=","). The replace_hyphen attribute specifies whether to replace all hyphens in the user's input with a space. By default it is set to true (replace_hyphen="true"), that is, it is expected that all names in the data tables will contain a space instead of a hyphen.

If replace_hyphen="true", administrative-area names in the data tables containing hyphens will not be matched during geocoding if replace_hyphen="true"; however, these area names with hyphens can be placed in the REAL_NAME column of the GC_AREA table to be returned as the administrative-area name in the geocoded result. Road names in the NAME column of the GC_ROAD table containing hyphens will, however, be matched during geocoding, but the matching performance will be degraded

<address_line> Elements

Each <address_line> element in the XML address format string describes the format of an address line. Each <address_line> element can have one or more child elements describing the individual address fields, such as street address, city, state (region or province), and postal code. These address field elements are listed in the order that the address fields appear in valid postal addresses. The optional attribute of the address field element is set to "no" if the address field is mandatory. By default, address field elements are optional.

<format> Elements

The format descriptions for house number, special street name, post box, and postal code elements are specified with a single or multiple <format> elements. Each <format> element specifies a valid layout and range of values for a particular address field. The following example illustrates the format used to define a special street name:

<format 
     form="1* HWY 0*" 
     effective="7-8" 
     output="$"
     addon_effective="0-1" 
     addon_output="$ HIGHWAY" />

The form attribute uses a regular expression-like string to describe the format: 1 stands for any alphabetic letter; 0 stands for any numerical digit; 2 stands for any alphabetic letter or any numerical digit; 1* specifies a sting consisting of all alphabetic letters; 0* specifies a string consisting of all numerical digits; 2* specifies a string consisting of any combination of numerical digits and alphabetic letters. All other symbols represent themselves.

Any string matching the pattern specified by the form attribute is considered to be a valid string for its (parent) address field. A valid string can then be broken down into segments specified by the attributes effective and addon_effective. The effective attribute specifies the more important, primary piece of the address string; the addon_effective attribute specifies the secondary piece of the address string.

The effective attribute specifies a substring of the full pattern using the start and end positions for the end descriptor of the form attribute. In the preceding example, effective="7-8" retrieves the substring (counting from position 0) starting at position 7 and ending at position 8, which is the substring defined by 0*, at the end of the form attribute.
The addon_effective attribute specifies a substring of the full pattern using the start and end positions for the start descriptor of the form attribute. In the preceding example, addon_effective="0-1" retrieves the substring, (counting from position 0) starting at position 0 and ending at position 1, which is the substring defined by 1*, at the beginning of the form attribute.

The output and addon_output attributes specify the output form of the address string for segments specified by the effective and addon_effective attributes, respectively. These output forms are used during address matching. The symbol $ stands for the matched string, and other symbols represent themselves. In the preceding example:

In output="$", the $ stands for the substring that was matched in the effective attribute.
In addon_output="$ HIGHWAY", the $ HIGHWAY stands for the substring that was matched in the addon_effective attribute, followed by a space, followed by the word HIGHWAY.

Using the <format> element in the preceding example, with form="1* HWY 0*", the input string 'STATE HWY 580' will have effective=580, output=580, addon_effective=STATE, and addon_output=STATE HIGHWAY.

The <format> element may also contain an <exception> element. The <exception> element specifies a string that has a valid form, but must be excluded from the address field. For example, in a <house_number> element with valid numbers 0*1* (that is, any numeric digits followed by any alphabetic letters), specifying <exception form="0*TH" /> means that any house number with (or without) numeric digits and ending with "TH" must be excluded.

11.5.7 GC_POI_<suffix> Table

The GC_POI_<suffix> table (for example, GC_POI_US) stores point of interest (POI) information for the country or group of countries associated with the table name suffix. POIs include features such as airports, monuments, and parks. This table contains one or more rows for each point of interest. (For example, it can contain multiple rows for a POI if the POI is associated with multiple settlements.) The GC_POI_<suffix> table contains the columns shown in Table 11-13.

Table 11-13 GC_POI_<suffix> Table

Column Name	Data Type	Description
POI_ID	NUMBER	ID number of the POI. (Required)
POI_NAME	VARCHAR2(64)	Name of the POI. (Required)
LANG_CODE	VARCHAR2(3)	3-letter ISO national language code for the language for the POI name. (Required)
FEATURE_CODE	NUMBER	Feature code for the POI, if the data vendor classifies POIs by category. (Optional)
HOUSE_NUMBER	VARCHAR2(10)	House number of the POI; may contain non-numeric characters. (Required)
STREET_NAME	VARCHAR2(80)	Road name of the POI. (Required)
SETTLEMENT_ID	NUMBER(10)	ID number of the settlement to which the POI belongs. (Required if the POI is associated with a settlement)
MUNICIPALITY_ID	NUMBER(10)	ID number of the municipality to which the POI belongs. (Required if the POI is associated with a municipality)
REGION_ID	NUMBER(10)	ID number of the region to which the POI belongs. (Required if the POI is associated with a region)
SETTLEMENT_NAME	VARCHAR2(64)	Name of the settlement to which the POI belongs. (Required if the POI is associated with a settlement)
MUNICIPALITY_NAME	VARCHAR2(64)	Name of the municipality to which the POI belongs. (Required if the POI is associated with a municipality)
REGION_NAME	VARCHAR2(64)	Name of the region to which the POI belongs. (Required if the POI is associated with a region)
POSTAL_CODE	VARCHAR2(16)	Postal code of the POI. (Required)
VANITY_CITY	VARCHAR2(35)	Name of the city popularly associated with the POI, if it is different from the actual city containing the POI. For example, the London Heathrow Airport is actually located in a town named Hayes, which is part of greater London, but people tend to associate the airport only with London. In this case, the VANITY_CITY value is `London`. (Optional)
ROAD_SEGMENT_ID	NUMBER	ID of the road segment on which the POI is located. (Required)
SIDE	VARCHAR2(1)	Side of the street on which the POI is located. Possible values: `L` (left) or `R` (right). (Required)
PERCENT	NUMBER	Percentage value at which the POI is located on the road. It is computed by dividing the distance from the street segment start point to the POI by the length of the street segment. (Required)
TELEPHONE_NUMBER	VARCHAR2(20)	Telephone number of the POI. (Optional)
LOC_LONG	NUMBER	Longitude coordinate value of the POI. (Required)
LOC_LAT	NUMBER	Latitude coordinate value of the POI. (Required)
COUNTRY_CODE_2	VARCHAR2(2)	2- letter ISO country code of the country to which the POI belongs. (Required)
PARTITION_ID	NUMBER	Partition key used for partitioning geocoder data by geographic boundaries. If the data is not partitioned, set the value to 1. (Required)

11.5.8 GC_POSTAL_CODE_<suffix> Table

The GC_POSTAL_CODE_<suffix> table (for example, GC_POSTAL_CODE_US) stores postal code information for the country or group of countries associated with the table-name suffix, if postal codes are used in the address format. This table contains one or more rows for each postal code; it may contain multiple rows for a postal code when the postal code is associated with multiple settlements. The GC_POSTAL_CODE_<suffix> table contains the columns shown in Table 11-14.

Table 11-14 GC_POSTAL_CODE_<suffix> Table

Column Name	Data Type	Description
POSTAL_CODE	VARCHAR2(16)	Postal code for the postal code area. (Required)
SETTLEMENT_NAME	VARCHAR2(64)	Name of the settlement to which the postal code belongs. (Required if the postal code is associated with a settlement)
MUNICIPALITY_NAME	VARCHAR2(64)	Name of the municipality to which the postal code belongs. (Required if the postal code is associated with a municipality)
REGION_NAME	VARCHAR2(64)	Name of the region to which the postal code belongs. (Required if the postal code is associated with a region)
LANG_CODE	VARCHAR2(3)	3-letter ISO national language code for the language associated with the area. (Required)
SETTLEMENT_ID	NUMBER(10)	ID number of the settlement to which the postal code belongs. (Required if the postal code is associated with a settlement)
MUNICIPALITY_ID	NUMBER(10)	ID number of the municipality to which the postal code belongs. (Required if the postal code is associated with a municipality)
REGION_ID	NUMBER(10)	ID number of the region to which the postal code belongs. (Required if the postal code is associated with a region)
CENTER_LONG	NUMBER	Longitude value of the center of the postal-code area. The center (longitude, latitude) value is set to the start- or end-point of the closest road segment to the center, depending on which point is closer. Oracle recommends that the CENTER_LONG and CENTER_LAT values be correctly set. If these values are not set, the longitude, latitude values of the geocoded result for an area will be (0,0). (Optional)
CENTER_LAT	NUMBER	Latitude value of the center of the area. (See the explanation for the CENTER_LONG column.) (Optional)
ROAD_SEGMENT_ID	NUMBER(10)	ID of the road segment to which the area center is set. This value must be set correctly if the geocoder is intended to work with the Oracle Spatial and Graph routing engine (described in Chapter 13); otherwise, it can be set to any nonzero value, but it cannot be null. (Required)
COUNTRY_CODE_2	VARCHAR2(2)	2- letter ISO country code of the country to which the area belongs. (Required)
PARTITION_ID	NUMBER	Partition key used for partitioning geocoder data by geographic boundaries. If the data is not partitioned, set the value to 1. (Required)
NUM_STREETS	NUMBER	The number of streets inside this postal code area. (Optional)

11.5.9 GC_ROAD_<suffix> Table

The GC_ROAD_<suffix> table (for example, GC_ROAD_US) stores road information for the country associated with the table name suffix. A road is a collection of road segments with the same name in the same settlement area; a road segment is defined in Section 11.5.10. The GC_ROAD_<suffix> table contains one or more rows for each road. (For example, it can contain multiple rows for a road if the road is associated with multiple settlements.) The GC_ROAD_<suffix> table contains the columns shown in Table 11-15.

Table 11-15 GC_ROAD_<suffix> Table

Column Name	Data Type	Description
ROAD_ID	NUMBER	ID number of the road. (Required)
SETTLEMENT_ID	NUMBER(10)	ID number of the settlement to which the road belongs. (Required if the road is associated with a settlement)
MUNICIPALITY_ID	NUMBER(10)	ID number of the municipality to which the road belongs. (Required if the road is associated with a municipality)
PARENT_AREA_ID	NUMBER(10)	ID number of the parent area of the municipality to which the road belongs. (Required if the road is associated with a parent area)
LANG_CODE	VARCHAR2(3)	3-letter ISO national language code for the language for the road name. (Required)
NAME	VARCHAR2(64)	Name of the road, including the type (if any), the prefix (if any), and the suffix (if any). For example, `N Main St` as NAME. (Required)
BASE_NAME	VARCHAR2(64)	Name of the road, excluding the type (if any), the prefix (if any), and the suffix (if any). For example, `N Main St` as NAME, with `Main` as BASE_NAME. (Required)
PREFIX	VARCHAR2(32)	Prefix of the road name. For example, `N Main St` as NAME, with `N` as PREFIX. (Required if the road name has a prefix)
SUFFIX	VARCHAR2(32)	Suffix of the road name. For example, `Main St NW` as NAME, with `NW` as SUFFIX. (Required if the road name has a suffix)
STYPE_BEFORE	VARCHAR2(32)	Street type that precedes the base name. For example, `Avenue Victor Hugo` as NAME, with `Avenue` as STYPE_BEFORE and `Victor Hugo` as BASE_NAME. (Required if the road type precedes the base name)
STYPE_AFTER	VARCHAR2(32)	Street type that follows the base name. For example, `Main St` as NAME, with `St` as STYPE_AFTER and `Main` as BASE_NAME. (Required if the road type follows the base name)
STYPE_ATTACHED	VARCHAR2(1)	Contains `T` if the street type is in the same word with the street name; contains `F` if the street type is a separate word from the street name. For example, in a German street address of `123 Beethovenstrass`, the street type is `strass`, and it is in the same word with the street name, which is `Beethoven`. (Required)
START_HN	NUMBER(5)	The lowest house number on the road. It is returned when a specified house number is lower than this value.
CENTER_HN	NUMBER(5)	Leading numerical part of the center house number. The center house number is the left side house number at the start point of the center road segment, which is located in the center of the whole road. (See the explanation of house numbers after Table 11-16 in Section 11.5.10.) It is returned when no house number is specified in an input address. (Required)
END_HN	NUMBER(5)	The highest house number on the road. It is returned when a specified house number is higher than this value.
START_HN_SIDE	VARCHAR2(1)	Side of the road of the lowest house number: `L` for left or `R` for right.
CENTER_HN_SIDE	VARCHAR2(1)	Side of the road of the center house number: `L` for left or `R` for right. The center house number is the left side house number at the start point of the center road segment, which is located in the center of the whole road. (See the explanation of house numbers after Table 11-16 in Section 11.5.10.) (Required if there are houses on the road)
END_HN_SIDE	VARCHAR2(1)	Side of the road of the highest house number: `L` for left or `R` for right.
START_LONG	NUMBER	Longitude value of the lowest house number.
START_LAT	NUMBER	Latitude value of the lowest house number.
CENTER_LONG	NUMBER	Longitude value of the center house number. The center house number is the left side house number at the start point of the center road segment, which is located in the center of the whole road. (See the explanation of house numbers after Table 11-16 in Section 11.5.10.) (Required)
CENTER_LAT	NUMBER	Latitude value of the center house number. (See also the explanation of the CENTER_LONG column.) (Required)
END_LONG	NUMBER	Longitude value of the highest house number.
END_LAT	NUMBER	Latitude value of the highest house number.
START_ROAD_SEG_ID	NUMBER(5)	ID number of the road segment at the start of the road.
CENTER_ROAD_SEG_ID	NUMBER(5)	ID number of the road segment at the center point of the road. (Required)
END_ROAD_SEG_ID	NUMBER(5)	ID number of the road segment at the end of the road.
POSTAL_CODE	VARCHAR2(16)	Postal code for the road. (Required)
COUNTRY_CODE_2	VARCHAR2(2)	2- letter ISO country code of the country to which the road belongs. (Required)
PARTITION_ID	NUMBER	Partition key used for partitioning geocoder data by geographic boundaries. If the data is not partitioned, set the value to 1. (Required)
CENTER_HN2	VARCHAR2(10)	The second part of the center house number. (See the explanation of house numbers after Table 11-16 in Section 11.5.10.) (Required)

11.5.10 GC_ROAD_SEGMENT_<suffix> Table

The GC_ROAD_SEGMENT_<suffix> table (for example, GC_ROAD_SEGMENT_US) stores road segment information for the country associated with the table name suffix. A road segment is the portion of a road between two continuous intersections along the road; an intersection occurs when roads meet or cross each other. A road segment can also be the portion of a road between the start (or end) of the road and its closest intersection along the road, or it can be the entire length of a road if there are no intersections along the road. The GC_ROAD_SEGMENT_<suffix> table contains one row for each road segment, and it contains the columns shown in Table 11-16.

Table 11-16 GC_ROAD_SEGMENT_<suffix> Table

Column Name	Data Type	Description
ROAD_SEGMENT_ID	NUMBER	ID number of the road segment. (Required)
ROAD_ID	NUMBER	ID number of the road containing this road segment. (Required)
L_ADDR_FORMAT	VARCHAR2(1)	Left side address format. Specify `N` if there are one or more house numbers on the left side of the road segment; leave null if there is no house number on the left side of the road segment. (Required)
R_ADDR_FORMAT	VARCHAR2(1)	Right side address format. Specify `N` if there are one or more house numbers on the right side of the road segment; leave null if there is no house number on the right side of the road segment. (Required)
L_ADDR_SCHEME	VARCHAR2(1)	Numbering scheme for house numbers on the left side of the road segment: `O` (all odd numbers), `E` (all even numbers), or `M` (mixture of odd and even numbers). (Required)
R_ADDR_SCHEME	VARCHAR2(1)	Numbering scheme for house numbers on the right side of the road segment: `O` (all odd numbers), `E` (all even numbers), or `M` (mixture of odd and even numbers). (Required)
START_HN	NUMBER(5)	The lowest house number on this road segment. (Required)
END_HN	NUMBER(5)	The highest house number on this road segment. (Required)
L_START_HN	NUMBER(5)	The leading numerical part of the left side starting house number. (See the explanation of house numbers after this table.) (Required)
L_END_HN	NUMBER(5)	The leading numerical part of the left side ending house number. (See the explanation of house numbers after this table.) (Required)
R_START_HN	NUMBER(5)	The leading numerical part of the right side starting house number. (See the explanation of house numbers after this table.) (Required)
R_END_HN	NUMBER(5)	The leading numerical part of the right side ending house number. (See the explanation of house numbers after this table.) (Required)
POSTAL_CODE	VARCHAR2(16)	Postal code for the road segment. If the left side and right side of the road segment belong to two different postal codes, create two rows for the road segment with identical values in all columns except for POSTAL_CODE. (Required)
GEOMETRY	SDO_GEOMETRY	Spatial geometry object representing the road segment. (Required)
COUNTRY_CODE_2	VARCHAR2(2)	2- letter ISO country code of the country to which the road segment belongs. (Required)
PARTITION_ID	NUMBER	Partition key used for partitioning geocoder data by geographic boundaries. If the data is not partitioned, set the value to 1. (Required)
L_START_HN2	VARCHAR2(10)	The second part of the left side starting house number. (See the explanation of house numbers after this table.) (Required if the left side starting house number has a second part)
L_END_HN2	VARCHAR2(10)	The second part of the left side ending house number. (See the explanation of house numbers after this table.) (Required if the left side ending house number has a second part)
R_START_HN2	VARCHAR2(10)	The second part of the right side starting house number. (See the explanation of house numbers after this table.) (Required if the right side starting house number has a second part)
R_END_HN2	VARCHAR2(10)	The second part of the right side ending house number. (See the explanation of house numbers after this table.) (Required if the right side ending house number has a second part)

A house number is a descriptive part of an address that helps identify the location of a establishment along a road segment. A house number is divided into two parts: the leading numerical part and the second part, which is the rest of the house number. The leading numerical part is the numerical part of the house number that starts from the beginning of the complete house number string and ends just before the first non-numeric character (if present). If the house number contains non-numeric characters, the second part of the house number is the portion from the first non-numeric character through the last character of the string. For example, if the house number is 123, the leading numerical part is 123 and the second part is null; however, if the house number is 123A23, the leading numerical part is 123 and the second part is A23.

The starting house number is the house number at the start point of a road segment; the start point of the road segment is the first shape point of the road segment geometry. The ending house number is the house number at the end point of a road segment; the end point of the road segment is the last shape point of the road segment geometry. The left and right side starting house numbers do not need to be lower than the left and right side ending house numbers. The house number attributes in the data tables follow these conventions in locating establishments along road segments.

11.5.11 Indexes on Tables for Geocoding

To use the vendor-supplied tables for geocoding, indexes must be created on many of the tables, and the names of these indexes must follow certain requirements.

Example 11-5 lists the format of CREATE INDEX statements that create the required indexes. In each statement, you must use the index name, table name, column names, and (if multiple columns are indexed) sequence of column names as shown in Example 11-5, except that you must replace all occurrences of <suffix> with the appropriate string (for example, US for the United States). Note that the first index in the example is a spatial index. Optionally, you can also include other valid keywords and clauses in the CREATE INDEX statements.

Example 11-5 Required Indexes on Tables for Geocoding

CREATE INDEX idx_<suffix>_road_geom ON gc_road_segment_<suffix> (geometry) INDEXTYPE IS mdsys.spatial_index;
CREATE INDEX idx_<suffix>_road_seg_rid ON gc_road_segment_<suffix> (road_id, start_hn, end_hn);
CREATE INDEX idx_<suffix>_road_id ON gc_road_<suffix> (road_id);
CREATE INDEX idx_<suffix>_road_setbn ON gc_road_<suffix> (settlement_id, base_name);
CREATE INDEX idx_<suffix>_road_munbn ON gc_road_<suffix> (municipality_id, base_name);
CREATE INDEX idx_<suffix>_road_parbn ON gc_road_<suffix> (parent_area_id, country_code_2, base_name);
CREATE INDEX idx_<suffix>_road_setbnsd ON gc_road_<suffix> (settlement_id, soundex(base_name));
CREATE INDEX idx_<suffix>_road_munbnsd ON gc_road_<suffix> (municipality_id, soundex(base_name));
CREATE INDEX idx_<suffix>_road_parbnsd ON gc_road_<suffix> (parent_area_id, country_code_2, soundex(base_name));
CREATE INDEX idx_<suffix>_inters ON gc_intersection_<suffix> (country_code_2, road_id_1, road_id_2);
CREATE INDEX idx_<suffix>_area_name_id ON gc_area_<suffix> (country_code_2, area_name, admin_level);
CREATE INDEX idx_<suffix>_area_id_name ON gc_area_<suffix> (area_id, area_name, country_code_2);
CREATE INDEX idx_<suffix>_poi_name ON gc_poi_<suffix> (country_code_2, name);
CREATE INDEX idx_<suffix>_poi_setnm ON gc_poi_<suffix> (country_code_2, settlement_id, name);
CREATE INDEX idx_<suffix>_poi_ munnm ON gc_poi_<suffix> (country_code_2, municipality_id, name);
CREATE INDEX idx_<suffix>_poi_ regnm ON gc_poi_<suffix> (country_code_2, region_id, name);
CREATE INDEX idx_<suffix>_ postcode ON gc_postal_code_<suffix> (country_code_2, postal_code);
CREATE INDEX idx_<suffix>_addrpt_addr ON gc_address_point_<suffix> (road_segment_id, road_id, house_number, side);

11.6 Installing the Profile Tables

The Oracle Geocoder profile tables are typically supplied by a data provider. Use the data provider's profile tables for geocoding whenever they are available. For users building their own geocoder schema, Oracle provides sample GC_COUNTRY_PROFILE, GC_PARSER_PROFILES, and GC_PARSER_PROFILEAFS tables; however, you should install these Oracle-supplied profile tables only if profile tables are not supplied with the data tables.

The Oracle-supplied tables contain parser profiles for a limited number of countries. If profiles for your country or group of countries of interest are not included, you will need to manually add them; and for a quick start, you can copy the parser profiles of a country with a similar address format to your country of interest, and edit these profiles where necessary. If your parser profiles of interest are included in the Oracle-supplied tables, you can use them directly or update them if necessary. No sample country profiles are provided, so you will need to add your own

To install and query the Oracle-supplied profile tables, perform the following steps:

Log on to your database as the geocoder user. The geocoder user is the user under whose schema the geocoder schema will be loaded.
Create the GC_COUNTRY_PROFILE, GC_PARSER_PROFILES, and GC_PARSER_PROFILEAFS tables by executing the SDO_GCDR.CREATE_PROFILE_TABLES procedure:
```
SQL> EXECUTE SDO_GCDR.CREATE_PROFILE_TABLES;
```
Populate the GC_PARSER_PROFILES and GC_PARSER_PROFILEAFS tables by running the sdogcprs.sql script in the $ORACLE_HOME/md/admin/ directory. For example:
```
SQL> @$ORACLE_HOME/md/admin/sdogcprs.sql
```
Query the profile tables to determine if parser profiles for your country of interest are supplied, by checking if its country code is included in the output of the following statements:
```
SQL> SELECT DISTINCT(country_code) FROM gc_parser_profiles ORDER BY country_code;
SQL> SELECT DISTINCT(country_code) FROM gc_parser_profileafs ORDER BY country_code;
```

11.7 Using the Geocoding Service (XML API)

In addition to the SQL API, Oracle Spatial and Graph also provides an XML API for a geocoding service that enables you to geocode addresses. A Java geocoder application engine performs international address standardization, geocoding, and POI matching, by querying geocoder data stored in the Oracle database. The support for unparsed addresses adds flexibility and convenience to customer applications.

This geocoding service is implemented as a Java 2 Enterprise Edition (J2EE) Web application that you can deploy in a WebLogic Server, Oracle Application Server, or standalone Oracle Application Server Containers for J2EE (OC4J) environment.

If the geocoding service is deployed in a standalone OC4J, the user name is oc4jadmin and the password is the administrator password you specified when you installed the OC4J instance.
If the geocoding service is deployed in a full Oracle Application Server, you must have created a security user in the OC4J instance where the geocoding service is running, and mapped the security user to the geocoding service's built-in security role GC_ADMIN_ROLE. After you have completed these tasks through Enterprise Manager, you can then use that security user's name and password to log in as the geocoding service administrator.

Figure 11-1 shows the basic flow of action with the geocoding service: a client locates a remote geocoding service instance, sends a geocoding request, and processes the response returned by the geocoding service instance.

Figure 11-1 Basic Flow of Action with the Spatial Geocoding Service

Description of "Figure 11-1 Basic Flow of Action with the Spatial Geocoding Service"

As shown in Figure 11-1:

The client sends an XML geocoding request, containing one or more input addresses to be geocoded, to the geocoding service using the HTTP protocol.
The geocoding service parses the input request and looks up the input address in the database.
The geocoding service sends the geocoded result in XML format to the client using the HTTP protocol.

After you load the geocoder schema into the database, you must configure the J2EE geocoder before it can be used, as explained in Section 11.7.1

11.7.1 Deploying and Configuring the J2EE Geocoder

The J2EE geocoder processes geocoding requests and generates responses. To enable this geocoding service, the geocoder.ear file (in $ORACLE_HOME/md/jlib) must be deployed using the Oracle WebLogic Server, Oracle Application Server (OracleAS), or a standalone installation of Oracle Application Server Containers for J2EE (OC4J). To deploy and configure the geocoding service, follow these steps.

Deploy the geocoder using Oracle WebLogic Server, Oracle Application Server, or OC4J:
- Using Oracle WebLogic Server: Unpack the geocoder.ear file in your $ORACLE_HOME/md/jlib directory. Rename the geocoder.ear file and unpack its contents into a directory called ../geocoder.ear . Rename the web.war file now found under the $geocoder.ear/ directory and unpack its contents into a subdirectory called ../web.war . Your directory structure should therefore be $geocoder.ear/web.war/ .
  
  After unpacking the geocoder.ear and web.war files, copy the xmlparserv2.jar file in your $ORACLE_HOME/LIB/ directory into the $geocoder.ear/web.war/WEB-INF/lib/ directory.
  
  To deploy the geocoder.ear file, log on to the WLS console (for example, http://<hostname>:7001/console); and from Deployments, install the geocoder.ear file, accepting the name geocoder for the deployment and choosing the option to make the deployment accessible from a specified location.
- Using Oracle Application Server or OC4J: Deploy the geocoder.ear file in your $ORACLE_HOME/md/jlib directory using the OracleAS or the standalone OC4J Application Server Control (for example, http://<hostname>:8888/em). You can deploy the geocoder.ear file in an existing OC4J instance, or you can create a new OC4J instance for the geocoder. In either case, enter geocoder for the Application Name during deployment.
Launch the Oracle Geocoder welcome page in a Web browser using the URL http://<hostname>:<port>/geocoder . On the welcome page, select the Administration link and enter the administrator (weblogic or oc4jadmin) user name and password.

Note:
If you are using WebLogic Server and if you are not using the default WebLogic administrator user name, you will need to edit the weblogic.xml file located in the $geocoder.ear/web.war/WEB-INF/ directory. Replace <principal-name>weblogic</principal-name> with your WebLogic Server administrator user name, for example, <principal-name>my_weblogic_admin</principal-name>.
Modify the geocoder configuration file (geocodercfg.xml). Uncomment at least one <geocoder> element, and change the <database> element attributes of that <geocoder> element to reflect the configuration of your database. For information about this file, see Section 11.7.1.1.
Save the changes to the file, and restart the geocoder.

If the welcome page is not displayed, ensure that the newly deployed geocoding service was successfully started. It is assumed that you are running WebLogic Server 10.3.1.0 or later with an Oracle Database Release 11.2 or later geocoder.ear file; or that you are running Oracle AS or OC4J 10.1.3 or later with an Oracle 11g or later geocoder.ear file.
Test the database connection by going to the welcome page at URL http://<hostname>:<port>/geocoder and running the international postal address parsing/geocoding demo and the XML geocoding request page. (These demos require geocoder data for the United States.)

Examples are available to demonstrate various capabilities of the geocoding service. Using the examples is the best way to learn the XML API, which is described in Section 11.7.2.

11.7.1.1 Configuring the geocodercfg.xml File

You will need to edit the <database> element in the default geocodercfg.xml file that is included with Spatial and Graph, to specify the database and schema where the geocoding data is loaded.

In this file, each <geocoder> element defines the geocoder for the database in which the geocoder schema resides. The <database> element defines the database connection for the geocoder. In Oracle 11g or later, there are two ways to define a database connection: by providing the JDBC database connection parameters, or by providing the JNDI name (container_ds) of a predefined container data source.

Example 11-6 illustrates two different ways in which a <database> element can be defined. The first definition specifies a JDBC connection; the second definition uses the JNDI name of a predefined container data source.

Example 11-6 <database> Element Definitions

<database name="gcdatabase"
          host="gisserver.example.com"
          port="1521"
          sid="orcl"
          mode="thin"
          user="geocoder_us"
          password="geocoder_us"
          load_db_parser_profiles="true" />
 
<database container_ds="jdbc/gc_europe"
          load_db_parser_profiles="true" />

The attributes of the <database> element are as follows

name is a descriptive name for the database connection; it is not used to connect to the database.
host, port, and sid identify the database.
mode identifies the type of JDBC driver to use for the connection.
user and password are the user name and password for the database user under whose schema the geocoding data is stored.
load_db_parser_profiles specifies whether to load the address parser profiles from the specified database connection. If true, the address parser-profiles are loaded from the geocoder schema; otherwise, the parser profiles are loaded from the application at ../applications/geocoder/web/WEB-INF/parser_profiles/<country-name>.ppr (for example, usa.ppr). Before Oracle 11g, parser profiles were loaded from the application only. This parameter should be set to true.
container_ds specifies the JNDI name for a predefined data source.

11.7.2 Geocoding Request XML Schema Definition and Example

For a geocoding request (HTTP GET or POST method), it is assumed the request has a parameter named xml_request whose value is a string containing the XML document for the request. The input XML document describes the input addresses that need to be geocoded. One XML request can contain one or more input addresses. Several internationalized address formats are available for describing the input addresses. (The input XML API also supports reverse geocoding, that is, a longitude/latitude point to a street address.)

The XML schema definition (XSD) for a geocoding request is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<!-- Schema for an XML geocoding request that takes one or more input_locations and supports reverse geocoding using the input_location's attributes -->
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
  <xsd:complexType name="address_lineType">
    <xsd:attribute name="value" type="xsd:string" use="required"/>
  </xsd:complexType>
  <xsd:complexType name="address_listType">
    <xsd:sequence>
      <xsd:element name="input_location" type="input_locationType"
         maxOccurs="unbounded"/>
    </xsd:sequence>
  </xsd:complexType>
  <xsd:complexType name="gdf_formType">
    <xsd:attribute name="name" type="xsd:string"/>
    <xsd:attribute name="street" type="xsd:string"/>
    <xsd:attribute name="intersecting_street" type="xsd:string"/>
    <xsd:attribute name="builtup_area" type="xsd:string"/>
    <xsd:attribute name="order8_area" type="xsd:string"/>
    <xsd:attribute name="order2_area" type="xsd:string"/>
    <xsd:attribute name="order1_area" type="xsd:string"/>
    <xsd:attribute name="country" type="xsd:string"/>
    <xsd:attribute name="postal_code" type="xsd:string"/>
    <xsd:attribute name="postal_addon_code" type="xsd:string"/>
  </xsd:complexType>
  <xsd:complexType name="gen_formType">
    <xsd:attribute name="name" type="xsd:string"/>
    <xsd:attribute name="street" type="xsd:string"/>
    <xsd:attribute name="intersecting_street" type="xsd:string"/>
    <xsd:attribute name="sub_area" type="xsd:string"/>
    <xsd:attribute name="city" type="xsd:string"/>
    <xsd:attribute name="region" type="xsd:string"/>
    <xsd:attribute name="country" type="xsd:string"/>
    <xsd:attribute name="postal_code" type="xsd:string"/>
    <xsd:attribute name="postal_addon_code" type="xsd:string"/>
  </xsd:complexType>
  <xsd:element name="geocode_request">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="address_list" type="address_listType"/>
      </xsd:sequence>
      <xsd:attribute name="vendor" type="xsd:string"/>
    </xsd:complexType>
  </xsd:element>
  <xsd:complexType name="input_addressType">
    <xsd:choice>
      <xsd:element name="us_form1" type="us_form1Type"/>
      <xsd:element name="us_form2" type="us_form2Type"/>
      <xsd:element name="gdf_form" type="gdf_formType"/>
      <xsd:element name="gen_form" type="gen_formType"/>
      <xsd:element name="unformatted" type="unformattedType"/>
    </xsd:choice>
    <xsd:attribute name="match_mode" default="relax_postal_code">
      <xsd:simpleType>
        <xsd:restriction base="xsd:NMTOKEN">
          <xsd:enumeration value="exact"/>
          <xsd:enumeration value="relax_street_type"/>
          <xsd:enumeration value="relax_poi_name"/>
          <xsd:enumeration value="relax_house_number"/>
          <xsd:enumeration value="relax_base_name"/>
          <xsd:enumeration value="relax_postal_code"/>
          <xsd:enumeration value="relax_builtup_area"/>
          <xsd:enumeration value="relax_all"/>
          <xsd:enumeration value="DEFAULT"/>
        </xsd:restriction>
      </xsd:simpleType>
    </xsd:attribute>
  </xsd:complexType>
  <xsd:complexType name="input_locationType">
    <xsd:sequence>
      <xsd:element name="input_address" type="input_addressType"
         minOccurs="0"/>
    </xsd:sequence>
    <xsd:attribute name="id" type="xsd:string"/>
    <xsd:attribute name="country" type="xsd:string"/>
    <xsd:attribute name="longitude" type="xsd:string"/>
    <xsd:attribute name="latitude" type="xsd:string"/>
    <xsd:attribute name="x" type="xsd:string"/>
    <xsd:attribute name="y" type="xsd:string"/>
    <xsd:attribute name="srid" type="xsd:string"/>
    <xsd:attribute name="multimatch_number" type="xsd:string" default="1000"/>
  </xsd:complexType>
  <xsd:complexType name="unformattedType">
    <xsd:sequence>
      <xsd:element name="address_line" type="address_lineType"
         maxOccurs="unbounded"/>
    </xsd:sequence>
    <xsd:attribute name="country" type="xsd:string"/>
  </xsd:complexType>
  <xsd:complexType name="us_form1Type">
    <xsd:attribute name="name" type="xsd:string"/>
    <xsd:attribute name="street" type="xsd:string"/>
    <xsd:attribute name="intersecting_street" type="xsd:string"/>
    <xsd:attribute name="lastline" type="xsd:string"/>
  </xsd:complexType>
  <xsd:complexType name="us_form2Type">
    <xsd:attribute name="name" type="xsd:string"/>
    <xsd:attribute name="street" type="xsd:string"/>
    <xsd:attribute name="intersecting_street" type="xsd:string"/>
    <xsd:attribute name="city" type="xsd:string"/>
    <xsd:attribute name="state" type="xsd:string"/>
    <xsd:attribute name="zip_code" type="xsd:string"/>
  </xsd:complexType>
</xsd:schema>

Example 11-7 is a request to geocode several three addresses (representing two different actual physical addresses), using different address formats and an unformatted address.

Example 11-7 Geocoding Request (XML API)

<?xml version="1.0" encoding="UTF-8"?>
<geocode_request xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../geocode_request.xsd">
  <address_list>
    <input_location id="1">
      <input_address>
        <us_form2 name="Oracle" street="500 Oracle Parkway" city="Redwood City"
           state="CA" zip_code="94021"/>
      </input_address>
    </input_location>
    <input_location id="2">
      <input_address>
 <gdf_form street="1 Oracle Drive" builtup_area="Nashua" order1_area="NH"
        postal_code="03062" country="US"/>
      </input_address>
    </input_location>
    <input_location id="3">
      <input_address>
<gen_form street="1 Oracle Drive" city="Nashua" region="NH" postal_code="03062" country="US"/>
      </input_address>
    </input_location>
    <input_location id="4">
      <input_address>
        <unformatted country="UNITED STATES">
          <address_line value="Oracle NEDC"/>
          <address_line value="1 Oracle drive "/>
          <address_line value="Nashua "/>
          <address_line value="NH"/>
        </unformatted>
      </input_address>
    </input_location>
  </address_list>
</geocode_request>

11.7.3 Geocoding Response XML Schema Definition and Example

A geocoding response contains one or more standardized addresses including longitude/latitude points, the matching code, and possibly multiple match and no match indication and an error message.

The XML schema definition (XSD) for a geocoding response is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<!-- Schema for an XML geocoding response -->
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
  <xsd:complexType name="geocodeType">
    <xsd:sequence>
      <xsd:element name="match" type="matchType" minOccurs="0"
         maxOccurs="unbounded"/>
    </xsd:sequence>
    <xsd:attribute name="id" type="xsd:string" use="required"/>
    <xsd:attribute name="match_count" type="xsd:string"/>
  </xsd:complexType>
  <xsd:element name="geocode_response">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="geocode" type="geocodeType" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>
  <xsd:complexType name="matchType">
    <xsd:sequence>
      <xsd:element name="output_address" type="output_addressType"/>
    </xsd:sequence>
    <xsd:attribute name="sequence" type="xsd:string" use="required"/>
    <xsd:attribute name="longitude" type="xsd:string" use="required"/>
    <xsd:attribute name="latitude" type="xsd:string" use="required"/>
    <xsd:attribute name="match_code" use="required">
      <xsd:simpleType>
        <xsd:restriction base="xsd:NMTOKEN">
          <xsd:enumeration value="0"/>
          <xsd:enumeration value="1"/>
          <xsd:enumeration value="2"/>
          <xsd:enumeration value="3"/>
          <xsd:enumeration value="4"/>
          <xsd:enumeration value="10"/>
          <xsd:enumeration value="11"/>
        </xsd:restriction>
      </xsd:simpleType>
    </xsd:attribute>
    <xsd:attribute name="error_message" type="xsd:string"/>
  </xsd:complexType>
  <xsd:complexType name="output_addressType">
    <xsd:attribute name="name" type="xsd:string"/>
    <xsd:attribute name="house_number" type="xsd:string"/>
    <xsd:attribute name="street" type="xsd:string"/>
    <xsd:attribute name="builtup_area" type="xsd:string"/>
    <xsd:attribute name="order1_area" type="xsd:string"/>
    <xsd:attribute name="order8_area" type="xsd:string"/>
    <xsd:attribute name="country" type="xsd:string"/>
    <xsd:attribute name="postal_code" type="xsd:string"/>
    <xsd:attribute name="postal_addon_code" type="xsd:string"/>
    <xsd:attribute name="side" type="xsd:string"/>
    <xsd:attribute name="percent" type="xsd:string"/>
    <xsd:attribute name="edge_id" type="xsd:string"/>
  </xsd:complexType>
</xsd:schema>

Example 11-8 is the response to the request in Example 11-7 in Section 11.7.2.

Example 11-8 Geocoding Response (XML API)

<?xml version="1.0" encoding="UTF-8"?>
<geocode_response xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:noNamespaceSchemaLocation="../geocode_response.xsd">
 <geocode id="1" match_count="1">
    <match sequence="0" 
         longitude="-122.26193971893862" latitude="37.53195483966782"
         match_code="10" error_message="????#ENUT?B281C??">
      <output_address name="" house_number="500" street="ORACLE PKY"
           builtup_area="REDWOOD CITY" order1_area="CA" order8_area="" 
           country="US" postal_code="94065" postal_addon_code="" side="L" 
           percent="0.33166666666666667" edge_id="28503563"/>
    </match>
 </geocode>
 <geocode id="2" match_count="1">
   <match sequence="0" 
        longitude="-71.45937299307225" latitude="42.70784494226865"
        match_code="1" error_message="????#ENUT?B281CP?">
      <output_address name="" house_number="1" street="ORACLE DR"
            builtup_area="NASHUA" order1_area="NH" order8_area="" 
            country="US" postal_code="03062" postal_addon_code="" side="L" 
            percent="0.01" edge_id="22325991"/>
   </match>
 </geocode>
 <geocode id="3" match_count="1">
   <match sequence="0" 
         longitude="-71.45937299307225" latitude="42.70784494226865"
         match_code="1" error_message="????#ENUT?B281CP?">
      <output_address name="" house_number="1" street="ORACLE DR"
            builtup_area="NASHUA" order1_area="NH" order8_area="" 
            country="US" postal_code="03062" postal_addon_code="" side="L" 
            percent="0.01" edge_id="22325991"/>
   </match>
 </geocode>
 <geocode id="4" match_count="1">
   <match sequence="0" 
         longitude="-71.45937299307225" latitude="42.70784494226865"
         match_code="1" error_message="????#ENUT?B281CP?">
     <output_address name="" house_number="1" street="ORACLE DR"
           builtup_area="NASHUA" order1_area="NH" order8_area="" 
           country="US" postal_code="03062" postal_addon_code="" side="L" 
           percent="0.01" edge_id="22325991"/>
   </match>
 </geocode>
</geocode_response>