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Database Constraints and Relational Schemas MCQs Quiz Online Tests pdf Download

Practice MCQs on database constraints and relational schemas, DBMS MCQs for online test prep. Relational data model and database constraints quiz has multiple choice questions (MCQ), database constraints and relational schemas quiz questions and answers as when primary key is null of new tuple then constraint violated is, answer key with choices as null integrity constraint, primary integrity constraint, secondary integrity constraint and entity integrity constraint for competitive exam prep. Free study guide is to learn database constraints and relational schemas quiz online with MCQs to practice test questions with answers.

MCQs on Database Constraints and Relational Schemas Quiz pdf Download

MCQ. When primary key is null of new tuple then constraint violated is

  1. null integrity constraint
  2. primary integrity constraint
  3. secondary integrity constraint
  4. entity integrity constraint

D

MCQ. Key which specifies that two different tuples cannot have same value is classified as

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

A

MCQ. Constraint violated when given value of attribute is not included in corresponding domain is

  1. domain constraint
  2. attribute constraint
  3. key constraint
  4. lock constraint

A

MCQ. If two or more constraints are violated by using insert operation then by default the

  1. insert is accepted
  2. insert is rejected
  3. insertion permanently blocked
  4. none of above

B

MCQ. Multi-valued dependencies and functional dependencies are classified as category of

  1. relation dependencies
  2. data dependencies
  3. entity dependencies
  4. attribute dependencies

B

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