Consider the relation R= {A, B, C, D, E, F, G, H} and the set of
functional dependencies: FD= {{B}—> {A}, {G}—> {D, H}, {C,
H}—> {E}, {B, D}—> {F}, {D}—>{C}, {C}—> {G}} 1) Draw FD
using the diagrammatic notation. 2) What are all candidate keys for
R? 3) If delete {C}—>{G} and change {C, H}—> {E} to {C,
H}—> {E, G}, what are all candidate keys for R