Database Authorization Quiz PDF: Questions and Answers - 39

MCQ 191: The responsibility of the database administrator includes

1. Authorize users
2. Structure database
3. Restructure database
4. All of the Above

MCQ 192: Scalar subqueries can occur in

1. Select clause
2. From clause
3. Where clause
4. All of the Above

MCQ 193: The result of Boolean expression 'true and unknown' is

1. True
2. False
3. Unknown
4. Null

MCQ 194: The rigorous two-phase locking protocol permits releasing all locks at the

1. Beginning of transaction
2. During execution of transaction
3. End of transaction
4. Never in the life-time of transaction

MCQ 195: Process of verifying credentials and allowing access to the database, is called its

1. Database isolation
2. Database authentication
3. Database application
4. Database administration