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Database Systems Practice Test 131

Integrity Constraints Quiz PDF: Questions and Answers - 131

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The Quiz: Taking the instructor's relation into account, the integrity constraint ensures that instructor name cannot be; "Integrity Constraints" App Download (Android & iOS) Free with answers empty, null, duplicated and referenced for computer science bachelor degree online. Study sql concepts and queries questions and answers, Apple Book to download free sample for software engineering online courses.

Integrity Constraints Questions and Answers PDF Download: Quiz 131

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

A) Null
B) Empty
C) Duplicated
D) Referenced

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

A) Non-recursive
B) Dynamic
C) Absolute
D) Recursive

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

A) 1
B) 0
C) Infinite
D) Unknown

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

A) Non-linear preemptive technique
B) Linear preemptive technique
C) Preemptive technique
D) Nonpreemptive technique

MCQ 655: The process of temporarily storing the blocks in an inmemory buffer, to satisfy future requests, is known as

A) Read-ahead
B) Buffering
C) Scheduling
D) Log Disk

Database Systems Exam Prep Tests

Integrity Constraints Learning App & Free Study Apps

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Integrity Constraints App (Android & iOS)

Integrity Constraints App (Android & iOS)

Database Management System App (Android & iOS)

Database Management System App (Android & iOS)

Operating Systems App (Android & iOS)

Operating Systems App (Android & iOS)

Semantic Web App (Android & iOS)

Semantic Web App (Android & iOS)