Oracle Designer Model, Release 6i
Deletion rules
Deletion rules on UNIQUE_IDENTIFIER_ENTRY reference properties, i.e. rule if referenced element is deleted
| Reference Property | Deletion Rule |
| ATTRIBUTE_REFERENCE | Block attempt to delete ATTRIBUTE |
| RELATIONSHIP_END_REFERENCE | Block attempt to delete RELATIONSHIP_END |
| UNIQUE_IDENTIFIER_REFERENCE | Cascade delete, if UNIQUE_IDENTIFIER deleted (Owning foreign key) |
Impact on child element types if UNIQUE_IDENTIFIER_ENTRY is deleted
| Impact on children | Via child reference property |
| Cascade delete DIAGRAM_ELEMENT_USAGES | DIAGRAM_ELEMENT_USAGE.CIELEMENT_REFERENCE |