ER Model and Business Rules – True or False

6. Overlapping and disjoint subtypes have different approaches on how the subtype discriminator is applied.

A. True
B. False

Correct Answer:  A. True

7. An entity instance of a subtype represents the same entity instance of a supertype.

A. True
B. False

Correct Answer:  A. True

8. A supertype is an entity type that shares common attributes or relationships distinct from other subgroupings.

A. True
B. False

Correct Answer:  B. False

9. An ERD that has had the entities clustered will display more entities.

A. True
B. False

Correct Answer:  B. False

10. Total specialization is represented by double lines between the supertype and subtype on an EER.

A. True
B. False

Correct Answer:  A. True

Leave A Comment?

16 − nine =