Oracle Designer Model, Release 6i
Deletion rules
Deletion rules on BASE_RELATION_LOCATION reference properties, i.e. rule if referenced element is deleted
| Reference Property | Deletion Rule |
| DATABASE_USER_REFERENCE | Cascade delete, if DATABASE_USER deleted |
| RELATION_SELECTION_REFERENCE | Cascade delete, if RELATION_SELECTION deleted |
| SNAPSHOT_REFERENCE | Cascade delete, if SNAPSHOT_IMPLEMENTATION deleted (Owning foreign key) |
| VIEW_IMPLEMENTATION_REFERENCE | Cascade delete, if VIEW_IMPLEMENTATION deleted (Owning foreign key) |
Impact on child element types if BASE_RELATION_LOCATION is deleted
| Impact on children | Via child reference property |
| Cascade delete DIAGRAM_ELEMENT_USAGES | DIAGRAM_ELEMENT_USAGE.CIELEMENT_REFERENCE |