process defining subtypes supertype forming relationships called

The process of defining one or more subtypes of a supertype and forming relationships is called:

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Is the process of defining one or more subtypes of the supertype and forming Supertype subtype relationships?

Generalization; specialization. Generalization is the process of defining a generalized entity type from a set of more specialized entity types while specialization is the process of defining one or more subtypes of the supertype.

What rule specifies that an entity can be a member of only one subtype at a time?

The disjoint rule specifies that if an entity instance of the supertype is a member of one subtype, it MUST simultaneously be a member of another subtype.

When a subtype entity that inherits values of all attributes of the supertype?

Cards
Term Enhanced entity-relationship (EER) model
Definition A model that has resulted from extending the original E-R model with new modeling.
Term Attribute inheritance
Definition a property by which subtype entities inherit values of all attributes and instances of all relationships of their supertype.
Chapter 3 Flashcardswww.flashcardmachine.com › chapter-3736null

How many subtypes can a Supertype have?

In general, a supertype will have two or more subtypes. (Either that, or it will be possible for the supertype to have ``instances of its own,'' which aren't also instances of the subtype.) However, a subtype is (directly) a subtype of only one supertype.

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