Oracle Designer Model, Release 6i
Deletion rules
Deletion rules on ATTRIBUTE reference properties, i.e. rule if referenced element is deleted
| Reference Property | Deletion Rule |
| DOMAIN_REFERENCE | Block attempt to delete DOMAIN |
| ENTITY_REFERENCE | Cascade delete, if ENTITY deleted (Owning foreign key) |
Impact on child element types if ATTRIBUTE is deleted
| Impact on children | Via child reference property |
| Nullify reference on COLUMN | COLUMN.SOURCE_ATTRIBUTE_REFERENCE |
| Cascade delete ATTRIBUTE_VALUES | ATTRIBUTE_VALUE.ATTRIBUTE_REFERENCE |
| Cascade delete DATAFLOW_ATTRIBUTE_USAGES | DATAFLOW_ATTRIBUTE_USAGE.ATTRIBUTE_REFERENCE |
| Cascade delete DATASTORE_ATTRIBUTE_USAGES | DATASTORE_ATTRIBUTE_USAGE.ATTRIBUTE_REFERENCE |
| Cascade delete DIAGRAM_ELEMENT_USAGES | DIAGRAM_ELEMENT_USAGE.CIELEMENT_REFERENCE |
| Cascade delete DOCUMENT_ATTACHMENTS | DOCUMENT_ATTACHMENT.ELEMENT_REFERENCE |
| Cascade delete EXTENDED_STRUCTURE_ELEMENTS | EXTENDED_STRUCTURE_ELEMENT.PART_OF_REFERENCE |
| Cascade delete EXTENDED_STRUCTURE_ELEMENTS | EXTENDED_STRUCTURE_ELEMENT.USE_OF_REFERENCE |
| Cascade delete FUNCTION_ATTRIBUTE_USAGES | FUNCTION_ATTRIBUTE_USAGE.ATTRIBUTE_REFERENCE |
| Block, if EVENTS exist | EVENT.ATTRIBUTE_REFERENCE |
| Block, if UNIQUE_IDENTIFIER_ENTRIES exist | UNIQUE_IDENTIFIER_ENTRY.ATTRIBUTE_REFERENCE |