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1D0-541 · Question #57

Which relational algebraic operation is used to select specific columns (attributes) from a relation?

The correct answer is C. Projection. See the full explanation below for the reasoning.

Question

Which relational algebraic operation is used to select specific columns (attributes) from a relation?

Options

  • AUnion
  • BDifference
  • CProjection
  • DIntersection

How the community answered

(25 responses)
  • A
    4% (1)
  • B
    8% (2)
  • C
    72% (18)
  • D
    16% (4)

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