Integrity Constraints Trivia Questions and Answers PDF Download eBook p. 131
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Integrity Constraints Questions and Answers PDF Download eBook
MCQ: Taking the instructor's relation into account, the integrity constraint ensures that instructor name cannot be
- Null
- Empty
- Duplicated
- Referenced
A
MCQ: The second subquery of the recursive view is said to be
- Non-recursive
- Dynamic
- Absolute
- Recursive
D
MCQ: In SQL, the count of an empty collection is defined to be
- 1
- 0
- Infinite
- Unknown
B
MCQ: The deadlock prevention scheme named wound-wait is a
- Non-linear preemptive technique
- Linear preemptive technique
- Preemptive technique
- Nonpreemptive technique
C
MCQ: The process of temporarily storing the blocks in an inmemory buffer, to satisfy future requests, is known as
- Read-ahead
- Buffering
- Scheduling
- Log Disk
B