Indicates the attribute’s supertype name, if applicable.
Level: Attribute
When defining an attribute as a subtype, you must indicate its supertype name in this property.
The Data Type property, Domain, Autonumber property, Value range property, and Picture Properties Group of properties are disabled since they are inferred from the attribute indicated in this property.
This property is only valid for attributes and is read-only.
This property applies only at design time.
Subtype Group object