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Database Systems MCQs (Computer Science) From Textbook

Database Systems Exam MCQs – Practice Test 4 (Chapter 14)

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Introduction to RDBMS MCQs – Practice Test 4 PDF Download

MCQ 16: In the relational model, the column of the table is known to be:

  1. Entity field
  2. Attribute
  3. Tuple
  4. Relation

MCQ 17: The contents of a relation instance may change with time as the relation:

  1. Domain
  2. Time
  3. Updated
  4. Retrieved

MCQ 18: The query languages are usually on a level higher than that of a standard:

  1. Updation language
  2. Query program language
  3. Procedural language
  4. Programming language

MCQ 19: Query languages used in practice includes:

  1. Elements
  2. Fields
  3. Instances
  4. Tuples

MCQ 20: A set of one or more attributes that collectively, allow us to identify uniquely a tuple in the relation, is known as:

  1. Unique key
  2. Special key
  3. Super key
  4. Primary key

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