Oracle Designer Model, Release 6i
Deletion rules
Deletion rules on TRIGGER_COLUMN_USAGE reference properties, i.e. rule if referenced element is deleted
| Reference Property | Deletion Rule |
| COLUMN_REFERENCE | Block attempt to delete COLUMN |
| DATABASE_TRIGGER_REFERENCE | Cascade delete, if DATABASE_TRIGGER deleted (Owning foreign key) |
Impact on child element types if TRIGGER_COLUMN_USAGE is deleted
| Impact on children | Via child reference property |
| Cascade delete DIAGRAM_ELEMENT_USAGES | DIAGRAM_ELEMENT_USAGE.CIELEMENT_REFERENCE |