Oracle Designer Model, Release 6i
Deletion rules
Deletion rules on RELATION_SELECTION reference properties, i.e. rule if referenced element is deleted
| Reference Property | Deletion Rule |
| TABLE_REFERENCE | Block attempt to delete RELATION_DEFINITION |
| VIEW_REFERENCE | Cascade delete, if RELATION_DEFINITION deleted (Owning foreign key) |
Impact on child element types if RELATION_SELECTION is deleted
| Impact on children | Via child reference property |
| Nullify reference on COLUMN | COLUMN.RELATION_SELECTION_REFERENCE |
| Cascade delete BASE_RELATION_LOCATIONS | BASE_RELATION_LOCATION.RELATION_SELECTION_REFERENCE |
| Cascade delete DIAGRAM_ELEMENT_USAGES | DIAGRAM_ELEMENT_USAGE.CIELEMENT_REFERENCE |
| Cascade delete MAPPING_ELEMENTS | MAPPING_ELEMENT.SOURCE_CIELEMENT_REFERENCE |
| Cascade delete MAPPING_ELEMENTS | MAPPING_ELEMENT.TARGET_CIELEMENT_REFERENCE |