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Integrity Constraints Trivia Questions and Answers PDF Download eBook p. 131

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Integrity Constraints Questions and Answers PDF Download eBook

Integrity Constraints Quiz

MCQ: Taking the instructor's relation into account, the integrity constraint ensures that instructor name cannot be

  1. Null
  2. Empty
  3. Duplicated
  4. Referenced

A

Recursive Views Quiz

MCQ: The second subquery of the recursive view is said to be

  1. Non-recursive
  2. Dynamic
  3. Absolute
  4. Recursive

D

Aggregate Functions Quiz

MCQ: In SQL, the count of an empty collection is defined to be

  1. 1
  2. 0
  3. Infinite
  4. Unknown

B

Deadlock Handling Quiz

MCQ: The deadlock prevention scheme named wound-wait is a

  1. Non-linear preemptive technique
  2. Linear preemptive technique
  3. Preemptive technique
  4. Nonpreemptive technique

C

Magnetic Disk and Flash Storage Quiz

MCQ: The process of temporarily storing the blocks in an inmemory buffer, to satisfy future requests, is known as

  1. Read-ahead
  2. Buffering
  3. Scheduling
  4. Log Disk

B