ER Model and Business Rules – True or False

11. Generalization is the process of defining more general entity types from a set of more specialized entity types.

A. True
B. False

Correct Answer:  A. True

12. It is appropriate to use a supertype/subtype relationship when there are attributes that apply to some of the instances of an entity type.

A. True
B. False

Correct Answer:  A. True

13. If an entity adheres to the disjoint rule, then an entity instance can be a member of more than one entity for a given supertype.

A. True
B. False

Correct Answer:  B. False

14. Action assertions have traditionally been implemented within an application program.

A. True
B. False

Correct Answer:  A. True

15. An entity cluster is a set of one or more entity types and associated relationships.

A. True
B. False

Correct Answer:  A. True

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