Applications of Functional Dependencies in Database Management System
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Questions and Answers

Which of the following is an example of a valid functional dependency?

  • {roll_no, name} → name (correct)
  • {dept_name} → dept_building
  • dept_building → roll_no
  • {name} → roll_no
  • What type of functional dependency is characterized by a dependent always being a subset of the determinant?

  • Non-Trivial functional dependency
  • Trivial functional dependency (correct)
  • Transitive functional dependency
  • Multivalued functional dependency
  • Which of the following is an example of an invalid functional dependency?

  • {roll_no, name} → dept_building (correct)
  • {name} → roll_no
  • dept_building → roll_no
  • {dept_name} → dept_building
  • In the context of functional dependencies, what does the determinant refer to?

    <p>The independent attribute(s)</p> Signup and view all the answers

    Which of the following is an example of a valid functional dependency based on the given properties?

    <p>{roll_no} → dept_name</p> Signup and view all the answers

    What rule allows inferring a new valid dependency if X → Y and Y → Z are both valid dependencies?

    <p>Transitivity rule</p> Signup and view all the answers

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