16. (STREET ADDRESS, CITY, STATE, ZIP) is an ideal primary key.

A. True
B. False

17. When the parent entity is required and the parent has a surrogate key, update actions can be ignored.

A. True
B. False

18. When the parent entity is required, a new parent row can always be inserted.

A. True
B. False

19. For every relationship, there are six possible referential integrity actions.

A. True
B. False

20. An ideal primary key is short, numeric and seldom changing.

A. True
B. False