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Database Management System MCQs – Practice Test 7 (Chapter 12)

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Relational Data Model & Database Constraints Quiz – Practice Test 7 PDF Download

MCQ 31: The type of constraint which states that not even a single value with primary key can be a null value is classified as:

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

MCQ 32: The values which cannot be divided further are classified as:

  1. formatted values
  2. bi-atomic model
  3. diatomic values
  4. atomic values

MCQ 33: On a relational database, the kind of constraint which must be specified and does not contain large classes of constraints is considered as:

  1. referential integrity constraint
  2. null integrity constraint
  3. semantic integrity constraints
  4. secondary integrity constraint

MCQ 34: The definition of relation in which values and attributes are ordered in tuple is classified as:

  1. fourth definition of relation
  2. third definition of relation
  3. first definition of relation
  4. second definition of relation

MCQ 35: The constraint violated when key value in tuple already exists in some other relation's tuple is called:

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

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