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Friday, 1 December 2017

If every functional dependency in set e is also in closure of f then this is classified as

  MOHAMMAD ZEESHAN       Friday, 1 December 2017
Q. If every functional dependency in set E is also in closure of F then this is classified as
A. FD is covered by E
B. E is covered by F
C. F is covered by E
D. Fplus is covered by E
Answer: B. E is covered by F

Functional dependency is a relationship that exists when one attribute uniquely determines another attribute. If R is a relation with attributes X and Y, afunctional dependency between the attributes is represented as X->Y, which specifies Y is functionally dependent on X.
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