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Author Question: If A --> B and B --> A are existing functional dependencies, which of the following are NOT ... (Read 16 times)

cmoore54

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If A --> B and B --> A are existing functional dependencies, which of the following are NOT equivalent functional dependencies?
 
  A) A --> B and B --> A
  B) A --> B, X and B --> A, X
  C) X --> A and A --> B
  D) X, A --> B, X and X, B --> A, X

Question 2

If A --> B is an existing functional dependency, which of the following is an augmented functional dependency?
 
  A) A, B --> C
  B) A, C --> B
  C) A --> C
  D) B --> A



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hugthug12

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Answer to Question 1

C

Answer to Question 2

B




cmoore54

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Reply 2 on: Jul 7, 2018
YES! Correct, THANKS for helping me on my review


emsimon14

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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