Let (ABCDEFGH) be relation schema and be the set of

Duration: 6 min

Q4190

UGC NET 2022

Letย Rย (ABCDEFGH)ย be a relation schema andย Fย be the set of dependenciesย ๐น = {๐ดโ†’๐ต,๐ด๐ต๐ถ๐ทโ†’๐ธ,๐ธ๐นโ†’๐บ,๐ธ๐นโ†’๐ปย andย ๐ด๐ถ๐ท๐นโ†’๐ธ๐บ}. The minimal cover of a set of functional dependencies is

  1. A.

    ๐ดโ†’๐ต,๐ด๐ถ๐ทโ†’๐ธ,๐ธ๐นโ†’๐บ, andย ๐ธ๐นโ†’๐ป

  2. B.

    ๐ดโ†’๐ต,๐ด๐ถ๐ทโ†’๐ธ,๐ธ๐นโ†’๐บ,๐ธ๐นโ†’๐ปย andย ๐ด๐ถ๐ท๐นโ†’๐บ

  3. C.

    ๐ดโ†’๐ต,๐ด๐ถ๐ทโ†’๐ธ,๐ธ๐นโ†’๐บ,๐ธ๐นโ†’๐ปย andย ๐ด๐ถ๐ท๐นโ†’๐ธ

  4. D.

    ๐ดโ†’๐ต,๐ด๐ต๐ถ๐ทโ†’๐ธ,๐ธ๐นโ†’๐ปย andย ๐ธ๐นโ†’๐บ

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