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

A. True
B. False

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

A. True
B. False

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

A. True
B. False

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

A. True
B. False

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

A. True
B. False

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