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Database Systems Competitive Exam MCQs – Mock Test 179

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Free Entity Relationship Model Notes App Download (Android & iOS): "A set of entities of the same type that share the same properties, or attributes, is known to be"; MCQ with answers: grouped entities, entity group, sampled entities, and entity set. Learn Database Design and ER Model Questions and Answers, Apple Book to download free chapter to optimize online instruction.

Entity Relationship Model MCQs – Mock Test 179 PDF Download

MCQ 891: A set of entities of the same type that share the same properties, or attributes, is known to be:

  1. Entity group
  2. Grouped entities
  3. Entity set
  4. Sampled entities

MCQ 892: Buffering is done by:

  1. Operating system
  2. Database system
  3. Disk controller
  4. Both A and B

MCQ 893: The generalization in which the same entity can belong to more than one lower-level entity set within a single generalization, is known to be:

  1. Disjointness constraint
  2. Overlapping constraint
  3. Completeness constraint
  4. Concurrency constraint

MCQ 894: The specified role must have been granted to the user, else the set role statement:

  1. Executed
  2. Accepts
  3. Passes
  4. Fails

MCQ 895: A data-loss in a disk block can be in result of:

  1. Head crash
  2. Sector crash
  3. Failure in data-transfer
  4. Both A and C

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Free Entity Relationship Model Notes App – Download Android & iOS Apps

Entity Relationship Model Notes App

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