Database Constraints and Relational Schemas MCQs Test Online PDF Download

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MCQ on Database Constraints and Relational SchemasQuiz 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