| Oracle® Database Reference 10g Release 2 (10.2) Part Number B14237-03  | 
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SYS_OBJECTS maps object IDs to object types and segment data block addresses.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
OBJECT_TYPE | 
VARCHAR2(15) | 
Type of the object | |
OBJECT_TYPE_ID | 
NUMBER | 
Type ID of the object | |
SEGMENT_TYPE_ID | 
NUMBER | 
Type of segment: TABLE, CLUSTER, INDEX, ROLLBACK, DEFERRED ROLLBACK, TEMPORARY, CACHE | 
|
OBJECT_ID | 
NUMBER | 
Object identifier | |
HEADER_FILE | 
NUMBER | 
ID of the file containing the segment header | |
HEADER_BLOCK | 
NUMBER | 
ID of the block containing the segment header | |
TS_NUMBER | 
NUMBER | 
The tablespace number |