Question: 2)Consider a relation with schema R(A, B, C, D) and FDs AB C, C D, and D A. a) Identify and proof whether the following

2)Consider a relation with schema R(A, B, C, D) and FDs AB C, C D, and D A.

a) Identify and proof whether the following FDs follow from the given FDS. AC D, CD A.

b) What are the keys of R?

c) What are the superkeys for R that are not keys?

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