Migration Rules › Modifying Referential Integrity Triggers for Migration › Relax the Rules

Relax the Rules

The schema update in CEJOB05A relaxes the rules for enforcing SOURCE model implementation structure for RI triggers. The IMPUSE objects and their associations from SOURCE are ignored for migration. RI trigger objects migrate with the parent entity type or data record.

• If the triggers correspond, those migrating from the SOURCE replace those in the DESTINATION. If the DESTINATION has had RI triggers generated, the implementation structure is retained.
• If the triggers do not correspond, any implementation structure in the DESTINATION is disrupted. The old triggers are deleted and those from SOURCE are added. Because the triggers are new objects for the DESTINATION, the old implementation structure does not apply.

Relaxing the rules for migrating RI triggers is appropriate when SOURCE and the DESTINATION models differ in the content of an entity relationship diagram or data structure. Typically, this is the case when development models contain only a portion of the full data model.