Firebird 2.5 Language ReferenceFirebird 2.5 Language ReferenceSystem Tables → RDB$CHECK_CONSTRAINTS
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RDB$CHECK_CONSTRAINTS

RDB$CHECK_CONSTRAINTS provides the cross references between the names of system-generated triggers for constraints and the names of the associated constraints (NOT NULL constraints, CHECK constraints and the ON UPDATE and ON DELETE clauses in foreign key constraints).

Column Name Data Type Description
RDB$CONSTRAINT_NAME CHAR(31) Constraint name, defined by the user or automatically generated by the system
RDB$TRIGGER_NAME CHAR(31) For a CHECK constraint, it is the name of the trigger that enforces this constraint. For a NOT NULL constraint, it is the name of the table the constraint is applied to. For a foreign key constraint, it is the name of the trigger that enforces the ON UPDATE, ON DELETE clauses

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Firebird 2.5 Language ReferenceFirebird 2.5 Language ReferenceSystem Tables → RDB$CHECK_CONSTRAINTS