
8. (15 pints) Find all keys of the relation R(ABCDEFG) with functional dependencies AB -»C, CD -»E, EF -»G, FG -»E, DE ->C, and BC A Demonstrate your knowledge by identifying which of the following is a key. MUST explain why it is or is not a key. (0 point will be given if no explanation.) (1) ABDF (2) BDEF (3) BDF (4) ABDEF (5) ACDF Show transcribed image text
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