GATE | Gate IT 2007 | Question 65

Consider the following implications relating to functional and multivalued dependencies given below, which may or may not be correct.

i. If A ↠ B and A ↠ C then A → BC

ii. If A → B and A → C then A ↠ BC

iii. If A ↠ BC and A → B then A → C

iv. If A → BC and A → B then A ↠ C

Exactly how many of the above implications are valid?
(A) 0
(B) 1
(C) 2
(D) 3


Answer: (C)

Explanation:

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