Question
A -> B
B -> C
BC -> A
A -> D
E -> A
D -> E
Which of the following is not a key?
a.
A
b.
E
c.
B,C
d.
D
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Q. Suppose relation R(A,B,C,D,E) has the following functional dependencies: A -> B B -> C BC -> A A -> D E -> A D -> E Which of the following is not a key?
Bandu_Sakhare : June 26, 2023
Here all are keys so, there should be answer of all of the above.
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