Question: Consider the following instance: (1) Does the functional dependency D->C hold in this instance? (2) Does the functional dependency C->B hold in this instance? (3)

 Consider the following instance:

A 4 5 3 1 6 B 2 8 3 2 4

(1) Does the functional dependency D->C hold in this instance?

(2) Does the functional dependency C->B hold in this instance?

(3) Does the functional dependency A->BCD hold in this instance?
 

A 4 5 3 1 6 B 2 8 3 2 4 C 5 4 3 5 6 224 D 4 3 1

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