Question: (1) [4 points] Consider the relation R- (A,B,C,D) with the following FDs: AB -> C, C-> D, and D-> A a. List all candidate keys

(1) [4 points] Consider the relation R- (A,B,C,D) with the following

(1) [4 points] Consider the relation R- (A,B,C,D) with the following FDs: AB -> C, C-> D, and D-> A a. List all candidate keys of . b. Is R in 3NF? BCNE? (2) (3 points] Consider relation S- (A, B,C,D) with the following FDs: A->B, B->C, C-D, and D->A a. List all candidate keys of S. b. Is s in 3NF? In BCNF? (3) 3 points] Given relation R-(A, B,C,D), determine if R is in 3NF or BCNE with respect to the following FDs: i B->C, C->A, C->D ABC->D, D->A

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