Data and Database Administration MCQs

Question 1

Performance analysis and tuning is which of the following?

Accepted Answer

Undertaken as an ongoing part of managing a database

Answer

Undertaken one time at the time of a DBMS installation

Answer

Undertaken one time at the time of the implementation of a new application

Answer

Undertaken as an ongoing part of the backup of a database

Question 2

Which of the following is the preferred way to recover a database after a transaction in progress terminates abnormally?

Accepted Answer

Rollback

Answer

Rollforward

Answer

Switch to duplicate database

Answer

Reprocess transactions

Question 3

Which of the following is true concerning open-source DBMS?

Accepted Answer

Is free or nearly free database software whose source code is publicly available

Answer

Is free or nearly free database software whose source code is not publicly available

Answer

Is not competitive against PC-oriented packages and is fully SQL compliant

Answer

Is competitive against PC-oriented packages and is not fully SQL compliant

Question 4

Concurrency control is important for which of the following reasons?

Accepted Answer

To ensure data integrity when updates occur to the database in a multiuser environment

Answer

To ensure data integrity when updates occur to the database in a single-user environment

Answer

To ensure data integrity while reading data occurs to the database in a multiuser environment

Answer

To ensure data integrity while reading data occurs to the database in a single-user environment

Question 5

Which of the following is the preferred way to recover a database after a system failure?

Accepted Answer

Switch to duplicate database

Answer

Rollback

Answer

Rollforward

Answer

Reprocess transactions

Question 6

A data warehouse administrator is concerned with which of the following?

Accepted Answer

The time to make a decision and the typical roles of a database administrator

Answer

The time to make a decision but not the typical roles of a database administrator

Answer

The typical roles of a data administrator and redesigning existing applications

Answer

The typical roles of a database administrator and redesigning existing applications

Question 7

To build a data warehouse and develop business intelligence applications, it is important that an organization build and maintain a comprehensive repository.

Accepted Answer

True

Answer

False

Question 8

Failure to control confidentiality may lead to loss of competitiveness.

Accepted Answer

True

Answer

False

Question 9

Authorization tables contain highly sensitive data and should be protected by stringent security rules.

Accepted Answer

True

Answer

False