PostgreSQL 7.4 Documentation
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# 32.20. referential_constraints

The view referential_constraints contains all referential (foreign key) constraints in the current database that belong to a table owned by the current user.

Table 32-18. referential_constraints Columns

Name | Data Type | Description
--- | --- | ---
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.

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