| Table Name | Description |
| ALL_APPLY_KEY_COLUMNS | Alternative key columns for a STREAMS table visible to the current user |
| Column ID | Column name | Data type | Length | Precision | NULL | Description |
| 1 | OBJECT_OWNER | VARCHAR2 | 30 | (null) | N | Owner of the object |
| 2 | OBJECT_NAME | VARCHAR2 | 30 | (null) | N | Name of the object |
| 3 | COLUMN_NAME | VARCHAR2 | 30 | (null) | N | Column name of the object |
| 4 | APPLY_DATABASE_LINK | VARCHAR2 | 128 | (null) | Y | Remote database link to which changes will be aplied |