Oracle Designer Model, Release 6i
Deletion rules

Deletion rules on MODULE_FUNCTION reference properties, i.e. rule if referenced element is deleted

Reference PropertyDeletion Rule
FUNCTION_REFERENCE Block attempt to delete FUNCTION
MODULE_REFERENCE Cascade delete, if MODULE deleted (Owning foreign key)

Impact on child element types if MODULE_FUNCTION is deleted

Impact on childrenVia child reference property
Cascade delete DIAGRAM_ELEMENT_USAGES DIAGRAM_ELEMENT_USAGE.CIELEMENT_REFERENCE