class %Library.ConstraintForeignKey extends %Library.ConstraintAbstract
Method to Check foreign key for existence. If lock is TRUE then the object referenced by the key value is also locked. If the reference does not exist or, if locking is requested and the lock fails then an error message is returned.
classmethod Delete() as %Status [ Language = objectscript ]
classmethod Update() as %Status [ Language = objectscript ]