Database Constraints and Relational Schemas MCQs Quiz Online PDF Download

Practice database constraints and relational schemas MCQs, DBMS MCQ online for 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 help with choices as null integrity constraint, primary integrity constraint, secondary integrity constraint and entity integrity constraint problem solving for viva, competitive exam preparation, interview questions. 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 the primary key is null of the new tuple then the constraint violated is

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

D

MCQ. The key which specifies that two different tuples cannot have the same value is classified as

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

A

MCQ. The constraint violated when the given value of attribute is not included in the 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. The multi-valued dependencies and functional dependencies are classified as category of

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

B