| Column ID | Column name | Data type | Length | Precision | NULL | Description |
|
| 1 | OWNER | VARCHAR2 | 30 | (null) | N | Owner of the external table |
| 2 | TABLE_NAME | VARCHAR2 | 30 | (null) | N | Name of the external table |
| 3 | TYPE_OWNER | CHAR | 3 | (null) | Y | Owner of the implementation type for the external table access driver |
| 4 | TYPE_NAME | VARCHAR2 | 30 | (null) | N | Name of the implementation type for the external table access driver |
| 5 | DEFAULT_DIRECTORY_OWNER | CHAR | 3 | (null) | Y | Owner of the default directory for the external table |
| 6 | DEFAULT_DIRECTORY_NAME | VARCHAR2 | 30 | (null) | N | Name of the default directory for the external table |
| 7 | REJECT_LIMIT | VARCHAR2 | 40 | (null) | Y | Reject limit for the external table |
| 8 | ACCESS_TYPE | VARCHAR2 | 7 | (null) | Y | Type of access parameters for the external table (CLOB/BLOB) |
| 9 | ACCESS_PARAMETERS | CLOB | 4000 | (null) | Y | Access parameters for the external table |
| 10 | PROPERTY | VARCHAR2 | 10 | (null) | Y | Property of the external table |