Let R ={A, B, C, D, E, F} be a relation schema with the following dependencies…
ISRO Scientist/Engineer SC · 2015 · Computer Science
Let R ={A, B, C, D, E, F} be a relation schema with the following dependencies C → F, E → A, EC → D, A → B Which of the following is a key for R ?
- A.
CD
- B.
EC
- C.
AE
- D.
AC
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Correct answer: B
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