Q1: Consider the relation R(A,B,C,D,E) with the following functional dependencies: A->B CD->E E->A B->D a) Deterrmine all keys for the relation R(A, B,C,D,E) and justify your answer. No credi justification will be given. b) Is the relation in BCNF? Justify your answer. No credit without justification c) Is the relation in 3NF? Justify your answer. No credit without justification. ) Is the relation in 2ndNF? Justify your answer. No credit without justification