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11. A candidate key must uniquely identify each row.

A. True
B. False

Show Answer

12. Well-structured relations encourage anomalies of data.

A. True
B. False

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13. A foreign key may be null and still adhere to the referential integrity constraint.

A. True
B. False

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14. If a relation is in third normal form, it does not need to be in second normal form.

A. True
B. False

Show Answer

15. The primary key of the new relation in a many-to-many relationship is a composite key comprised of the primary keys of each of the binary entities.

A. True
B. False

Show Answer
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