ALL_CONS_COLUMNS describes columns that are accessible to the current user and that are specified in constraints.
DBA_CONS_COLUMNS describes all columns in the database that are specified in constraints.
USER_CONS_COLUMNS describes columns that are owned by the current user and that are specified in constraints.
| Column | Datatype | NULL | Description |
|---|---|---|---|
OWNER |
VARCHAR2(30) |
NOT NULL |
Owner of the constraint definition |
CONSTRAINT_NAME |
VARCHAR2(30) |
NOT NULL |
Name of the constraint definition |
TABLE_NAME |
VARCHAR2(30) |
NOT NULL |
Name of the table with the constraint definition |
COLUMN_NAME |
VARCHAR2(4000) |
Name of the column or attribute of the object type column specified in the constraint definition | |
Note: If you create a constraint on a user-defined REF column, the system creates the constraint on the attributes that make up the REF column. Therefore, the column names displayed in this view are the attribute names, with the REF column name as a prefix, in the following form:
|
|||
POSITION |
NUMBER |
Original position of the column or attribute in the definition of the object |