Question: Given the Universal Relation Schema URS (A, B, C, G, W, X, Y, Z) and the set of FDs prevailing over URS, F {fd1, fd2,

Given the Universal Relation Schema URS (A, B, C, G, W, X, Y, Z) and the set of FDs prevailing over URS, F {fd1, fd2, fd3, fd4, fd5}, where:
fd3: (Y, A} → {C, G); fdl: B → G; fd4: C → W; fd2: (X, Z} → {Z, Y, B}; fd5: (X, Z} > 6;

a. Derive a canonical cover of F.
b. Derive the candidate key(s) of URS.
c. Is the fd {X, A, Z} †’ {W} in F+?

fd3: (Y, A} {C, G); fdl: B G; fd4: C W; fd2: (X, Z} {Z, Y, B}; fd5: (X, Z} > 6;

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