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A relation is in 5NF when multivalued dependencies are isolated in their own relation.

  • A.True
  • B.False

Answer: B

Correct answer: False

Isolating multivalued dependencies in their own relations gives fourth normal form, not fifth. Fifth normal form, sometimes called project-join normal form, deals with join dependencies: relations that cannot be reconstructed correctly from any two of their projections but can from three or more.

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