| constraint_catalog | sql_identifier | Name of the database containing the constraint (always the current database) |
| constraint_schema | sql_identifier | Name of the schema containing the constraint |
| constraint_name | sql_identifier | Name of the constraint |
| unique_constraint_catalog | sql_identifier | Name of the database that contains the unique or primary key
constraint that the foreign key constraint references (always
the current database)
|
| unique_constraint_schema | sql_identifier | Name of the schema that contains the unique or primary key
constraint that the foreign key constraint references
|
| unique_constraint_name | sql_identifier | Name of the unique or primary key constraint that the foreign
key constraint references
|
| match_option | character_data | Match option of the foreign key constraint:
FULL, PARTIAL, or
NONE.
|
| update_rule | character_data | Update rule of the foreign key constraint:
CASCADE, SET NULL,
SET DEFAULT, RESTRICT, or
NO ACTION.
|
| delete_rule | character_data | Delete rule of the foreign key constraint:
CASCADE, SET NULL,
SET DEFAULT, RESTRICT, or
NO ACTION.
|