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ALL_REFS

ALL_REFS describes the REF columns and REF attributes in object type columns accessible to the current user.

DBA_REFS describes all REF columns and REF attributes in the database.
USER_REFS describes the REF columns and REF attributes in object type columns owned by the current user. This view does not display the OWNER column.

Column	Datatype	NULL	Description
`OWNER`	`VARCHAR2(128)`	`NOT NULL`	Owner of the table
`TABLE_NAME`	`VARCHAR2(128)`	`NOT NULL`	Name of the table
`COLUMN_NAME`	`VARCHAR2(4000)`		Name of the `REF` column or attribute. If it is not a top-level attribute, the value of `COLUMN_NAME` should be a path name starting with the column name.
`WITH_ROWID`	`VARCHAR2(3)`		Indicates whether the `REF` value is stored with `ROWID` (`YES`) or not (`NO`)
`IS_SCOPED`	`VARCHAR2(3)`		Indicates whether the `REF` column is scoped (`YES`) or not (`NO`)
`SCOPE_TABLE_OWNER`	`VARCHAR2(128)`		Owner of the scope table, if it exists and is accessible by the user
`SCOPE_TABLE_NAME`	`VARCHAR2(128)`		Name of the scope table, if it exists and is accessible by the user
`OBJECT_ID_TYPE`	`VARCHAR2(33)`		Indicates whether the object ID (OID) is `USER-DEFINED` or `SYSTEM GENERATED`

See Also:

“DBA_REFS”
“USER_REFS”