PostgreSQL 8.3.21 Documentation
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# 33.23. `referential_constraints`

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

Table 33-21. `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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