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The fact that all employees of a particular organization should not have salaries more than $10000 is a _____ constraint.

  • A.Schema
  • B.Tuple
  • C.Domain
  • D.Relational

Answer: C

Correct answer: Domain

A limit on the values a single attribute may take is a domain constraint - here, that salary must not exceed $10000. A tuple constraint would relate two attributes of the same row, and a schema constraint the structure itself.

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