Managing Multiuser Databases – True or False

11. Two transactions that run concurrently and generate results that are consistent with the results that would have occurred if  they had run separately are referred to as serializable transactions.

A. True
B. False

Correct Answer:  A. True

12. The lost update problem is when User A reads data that have been processed by a portion of a transaction from User B.

A. True
B. False

Correct Answer:  B. False

13. The transaction log contains a copy of every database record (or page) after it has changed. These records are called before images.

A. True
B. False

Correct Answer:  B. False

14. Database administration refers to a function that applies to the entire organization.

A. True
B. False

Correct Answer:  B. False

15. Locks placed by command are implicit locks.

A. True
B. False

Correct Answer:  B. False

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