The view domain_constraints contains all
   constraints belonging to domains defined in the current database.
  
Table 32-14. domain_constraints Columns
| Name | Data Type | Description | 
|---|
| constraint_catalog | sql_identifier | Name of the database that contains the constraint (always the current database) | 
| constraint_schema | sql_identifier | Name of the schema that contains the constraint | 
| constraint_name | sql_identifier | Name of the constraint | 
| domain_catalog | sql_identifier | Name of the database that contains the domain (always the current database) | 
| domain_schema | sql_identifier | Name of the schema that contains the domain | 
| domain_name | sql_identifier | Name of the domain | 
| is_deferrable | character_data | YES if the constraint is deferrable, NO if not | 
| initially_deferred | character_data | YES if the constraint is deferrable and initially deferred, NO if not |