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Database Systems Competitive Exam MCQs – Mock Test 131

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The Integrity Constraints Notes Questions and Answers PDF (Integrity Constraints Quiz Answers PDF e-Book) download Ch. 21-131 to study Database Systems Practice Tests. Learn SQL Concepts and Queries MCQ Questions PDF, Integrity Constraints Multiple Choice Questions (MCQ Quiz) for computer science bachelor degree online. Free Integrity Constraints Notes App – Download Database Systems App to study deadlock handling, aggregate functions, recursive views, integrity constraints test prep for software engineering online courses.

The MCQ: Taking the instructor's relation into account, the integrity constraint ensures that instructor name cannot be; "Integrity Constraints Notes" App (iOS, Android) with answers: empty, null, referenced, and duplicated for software engineering online courses. Study SQL Concepts and Queries Questions and Answers, Apple Book to download free chapter for software engineering online courses.

Integrity Constraints MCQs – Mock Test 131 PDF Download

MCQ 651: Taking the instructor's relation into account, the integrity constraint ensures that instructor name cannot be:

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

MCQ 652: The second subquery of the recursive view is said to be:

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

MCQ 653: In SQL, the count of an empty collection is defined to be:

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

MCQ 654: The deadlock prevention scheme named wound-wait is a:

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

MCQ 655: 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

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Integrity Constraints Notes App

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