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Database Systems MCQs – Practice Test 9 (Chapter 14)

Introduction to RDBMS MCQs with Answers PDF Download – Test 9

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Introduction to RDBMS MCQs – Practice Test 9 PDF Download

MCQ 41: The values of the attribute values of a tuple must be such that they can uniquely identify the:

  1. Instance
  2. Entity
  3. Relation
  4. Tuple

MCQ 42: A language in which a user requests information from the database, is known as:

  1. Response Language
  2. Data language
  3. Query language
  4. Processing language

MCQ 43: The value of a given variable may change with:

  1. Time
  2. Retrieval
  3. Storage
  4. Domain

MCQ 44: Referential integrity constraints other than foreign key constraints are not shown explicitly in:

  1. Schema declaration
  2. Schema definition
  3. Schema Diagrams
  4. Schema Structure

MCQ 45: The keys must be chosen crucially and carefully is:

  1. Unique key
  2. Superkey
  3. Primary key
  4. None of the above

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