Deleting Supertype and Subtype Data
When you delete supertype data, all the associated subtype data is deleted as well.
Subtype data may be removed from a record constellation by:
As a result, the corresponding subtype data is removed. If the subtype window is open, its column displays become non-editable.
What happens as a result of removing subtype data depends on the value of the Delete Super on Delete table attribute for the removed subtype.
If Delete Super on Delete is set for that subtype, the supertype data and thereby the entire record constellation is automatically removed. Fire On Delete transition constraints on the record constellation are evaluated.
If Delete Super on Delete is not set for the removed subtype, the corresponding subtype indicator in the supertype record is automatically de-selected. This is handled as an UPDATE manipulation on the record constellation. Fire On Update transition constraints defined on the constellation are evaluated.