Managing Multiuser Databases – True or False

6. When one transaction reads a changed record that has not been committed to the database a filthy read occurs.

A. True
B. False

Correct Answer:  B. False

7. The size of a lock is referred to as lock sizing.

A. True
B. False

Correct Answer:  B. False

8. When two transactions are being processed against the database at the same time they are termed concurrent transactions.

A. True
B. False

Correct Answer:  A. True

9. Locks placed by the DBMS are explicit locks.

A. True
B. False

Correct Answer:  B. False

10. In optimistic locking, the assumption is made that conflict will occur.

A. True
B. False

Correct Answer:  B. False

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