If A --> B and B --> A are existing functional ...

[cmoore54]

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

[hugthug12]

Answer to Question 1

C

Answer to Question 2

B

[cmoore54]

Excellent

[vickyvicksss]

Gracias!