Types of Views

The Heterogeneous Services data dictionary views, whose names all begin with the HS_ prefix, can be divided into the following categories:

General views
Views used for the transaction service
Views used for the SQL service

Most of the data dictionary views are defined for both classes and instances. For most types of data there is a *_CLASS view and a *_INST view. See Table 4-1 for additional details.

Table 4-1 Data Dictionary Views for Heterogeneous Services

View	Type	Identifies
`HS_BASE_CAPS`	SQL service	All capabilities supported by Heterogeneous Services
`HS_BASE_DD`	SQL service	All data dictionary translation table names supported by Heterogeneous Services
`HS_CLASS_CAPS`	Transaction service, SQL service	Capabilities for each class
`HS_CLASS_DD`	SQL service	Data dictionary translations for each class
`HS_CLASS_INIT`	General	Initialization parameters for each class
`HS_FDS_CLASS`	General	Classes accessible from the Oracle server
`HS_FDS_INST`	General	Instances accessible from the Oracle server
`HS_INST_CAPS`	Transaction service, SQL service	Capabilities for each instance (if set up by the DBA)
`HS_INST_DD`	SQL service	Data dictionary translations for each class (if set up by the DBA)
`HS_INST_INIT`	General	Initialization parameters for each instance (if set up by the DBA)
`HS_BULK`		Data dictionary view to keep track of internal objects created with bulk load procedures.

Like all Oracle data dictionary tables, these views are read-only. Do not change the content of any of the underlying tables.