Managing Multiuser Databases – General Questions

16. Which of the following locks the item from access of any type?

A. Implicit lock
B. Explicit lock
C. Exclusive lock
D. Shared lock

Correct Answer:  C. Exclusive lock

17. The size of a lock is called:

A. implicit lock.
B. lock granularity.
C. exclusive lock.
D. shared lock.

Correct Answer:  B. lock granularity.

18. A cursor type in which the application sees the data as they were at the time the cursor was opened is called:

A. forward only.
B. static.
C. keyset.
D. dynamic.

Correct Answer:  B. static.

19. What is the overall responsibility of the DBA?

A. Facilitate the development and use of the database
B. Create and populate tables
C. Development, operation, and maintenance of the database and its applications
D. Both the first and third answers above are correct.

Correct Answer:  D. Both the first and third answers above are correct.

20. Locks placed by the DBMS are called ________ .

A. implicit locks
B. explicit locks
C. exclusive locks
D. shared locks

Correct Answer:  A. implicit locks

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