referential_constraints

referential_constraints contains all referential (foreign key) constraints.

The following fields are provided in referential_constraints:

Field	Description
CONSTRAINT_CATALOG	The name of the catalog to which the constraint belongs. This value is always def.
CONSTRAINT_SCHEMA	The name of the database to which the constraint belongs.
CONSTRAINT_NAME	The name of the constraint.
UNIQUE_CONSTRAINT_CATALOG	The name of the catalog containing the unique constraint that the constraint references. This value is always def.
UNIQUE_CONSTRAINT_SCHEMA	The name of the schema containing the unique constraint that the constraint references.
UNIQUE_CONSTRAINT_NAME	The name of the unique constraint that the constraint references.
MATCH_OPTION	The value of the constraint MATCH attribute. The only valid value at this time is NONE.
UPDATE_RULE	The value of the constraint ON UPDATE attribute. Valid values: CASCADE, SET NULL, SET DEFAULT, RESTRICT, and NO ACTION.
DELETE_RULE	The value of the constraint ON DELETE attribute. Valid values: CASCADE, SET NULL, SET DEFAULT, RESTRICT, and NO ACTION.
TABLE_NAME	The name of the table. This value is the same as in the TABLE_CONSTRAINTS table.
REFERENCED_TABLE_NAME	The name of the table referenced by the constraint.