Relational Database Schemas MCQs Quiz Online PDF Download

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Database management system practice test MCQ: in a relation schema, each key of schema having more than one key is classified as with choices candidate key, super key, simple key and parallel key with online sample interview questions and answers, competitive tests preparation for jobs hiring. Free study guide is for online learning relational database schemas quiz with MCQs to practice test questions with answers.

MCQs on Relational Database Schemas Quiz PDF Download

MCQ. In a relation schema, each key of schema having more than one key is classified as

  1. candidate key
  2. super key
  3. simple key
  4. parallel key

A

MCQ. In data model schemas, constraints that are can not be expressed directly are classified as

  1. application based constraints
  2. semantic constraints
  3. business rules
  4. all of above

D

MCQ. In database schema, database snapshot is also called

  1. current set of entity
  2. current set of instances
  3. current set of entity
  4. current set of objects

B

MCQ. In relational database schemas, transition constraints are also known as

  1. static constraints
  2. dynamic constraints
  3. implicit constraints
  4. explicit constraints

B

MCQ. In relational database schemas, state constraints are also known as

  1. static constraints
  2. dynamic constraints
  3. implicit constraints
  4. explicit constraints

A