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Database Systems Competitive Exam MCQs – Practice Test 13 (Chapter 4)

Database Design and ER Model MCQs with Answers PDF Download – Test 13

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Database Design and ER Model MCQs – Practice Test 13 PDF Download

MCQ 61: 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 62: 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 63: In an E-R diagram, double lines are an indication of participation type:

  1. Total
  2. Composite
  3. Partial
  4. Compound

MCQ 64: If both the relationship edges have a maximum value of 1, the relationship is said to be:

  1. One-to-many
  2. Many-to-one
  3. Many-to-many
  4. One-to-one

MCQ 65: A database designer serves a high-level data model by providing:

  1. Contextual framework
  2. Computational framework
  3. Conceptual framework
  4. Target framework

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