Computer Science MCQs From Database Systems Textbook

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The MCQ: A set of one or more attributes that collectively, allow us to identify uniquely a tuple in the relation, is known as; "Database Keys" App Download [Free] with answers: unique key, special key, super key, and primary key for master degree in computer science. Practice Database Keys Quiz Questions, download Apple Book (Free Chapter) for online software development courses.

Database Keys Questions and Answers PDF Download

MCQ: 1

A set of one or more attributes that collectively, allow us to identify uniquely a tuple in the relation, is known as

  1. Unique key
  2. Special key
  3. Super key
  4. Primary key
MCQ: 2

No two tuples in a relation are allowed to have exactly the same value for

  1. Some attributes
  2. All attributes
  3. Some tuple
  4. All tuples
MCQ: 3

Specifying tuples within a given relation, are expressed in terms of the

  1. Attributes
  2. Variables
  3. Function
  4. Domain
MCQ: 4

A superkey may contain extraneous

  1. Attributes
  2. Keys
  3. Instances
  4. Entries
MCQ: 5

The values of the attribute values of a tuple must be such that they can uniquely identify the

  1. Instance
  2. Entity
  3. Relation
  4. Tuple

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Database Keys MCQ App (Android & iOS)

Database Keys MCQ App

DataBase Management System (MCS) MCQ App (iOS & Android)

DataBase Management System (MCS) MCQ App

C++ MCQs App (iOS & Android)

C++ MCQs App

HCI MCQs App (Android & iOS)

HCI MCQs App