Oracle Designer Model, Release 6i
Deletion rules
Deletion rules on KEY_COMPONENT reference properties, i.e. rule if referenced element is deleted
| Reference Property | Deletion Rule |
| FOREIGN_COLUMN_REFERENCE | Block attempt to delete COLUMN |
| FOREIGN_CQA_REFERENCE | Block attempt to delete COLUMN_QUALIFIED_ATTRIBUTE |
| COLUMN_REFERENCE | Cascade delete, if COLUMN deleted |
| CQA_REFERENCE | Cascade delete, if COLUMN_QUALIFIED_ATTRIBUTE deleted |
| CONSTRAINT_REFERENCE | Cascade delete, if CONSTRAINT deleted (Owning foreign key) |
| FOREIGN_COLUMN_REFERENCE2 | Nullify reference, if COLUMN deleted |
| FOREIGN_CQA_REFERENCE2 | Nullify reference, if COLUMN_QUALIFIED_ATTRIBUTE deleted |
Impact on child element types if KEY_COMPONENT is deleted
| Impact on children | Via child reference property |
| 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 MAPPING_ELEMENTS | MAPPING_ELEMENT.SOURCE_CIELEMENT_REFERENCE |
| Cascade delete MAPPING_ELEMENTS | MAPPING_ELEMENT.TARGET_CIELEMENT_REFERENCE |