Database - Data and Database Administration

Exercise :: Data and Database Administration - General Questions

6. 

The transaction log includes which of the following?

A. The before-image of a record
B. The after-image of a record
C. The before and after-image of a record
D. The essential data of the record

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

7. 

Which of the following could cause data to be unavailable?

A. Data becoming lost or inaccurate
B. The database server
C. Planned database maintenance activities
D. All of the above.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

8. 

A shared lock allows which of the following types of transactions to occur?

A. Delete
B. Insert
C. Read
D. Update

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

9. 

Locking may cause which of the following problems?

A. Erroneous updates
B. Deadlock
C. Versioning
D. All of the above.

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

10. 

Performance analysis and tuning is which of the following?

A. Undertaken one time at the time of a DBMS installation
B. Undertaken one time at the time of the implementation of a new application
C. Undertaken as an ongoing part of the backup of a database
D. Undertaken as an ongoing part of managing a database

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.