Data and Database Administration – General Questions

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  • / Author: GkFeed Team

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

Correct Answer: D. The essential data of the record

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.

Correct Answer: D. All of the above.

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

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

Correct Answer: C. Read

9. Locking may cause which of the following problems?

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

Correct Answer: B. Deadlock

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

Correct Answer: D. Undertaken as an ongoing part of managing a database
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