(Choose 1 answer)
When is a set of functional dependencies F said to be minimal?
a)Every dependency in F has a single attribute for its right hand side
b)We cannot replace any dependency X -> A in F with other dependency Y->A where Y is a proper subset of X and the changed set of dependencies is still equivalent to F
c)
We cannot remove any dependency from F and still have set of dependencies that is equivalent to F
d)Every dependency in F has two attributes for its right hand side
A. (a), (b) and (c)
B. (a) and (b)
C. (b) and (c)
D. (a) and (c)
E. (b), (c) and (d)
Exit 34
