Relationship with pattern R (A, B, C, D, E), its functions depend on the set:
F={A - BC, CD - E, B, D, E and A}
Calculate all the candidate key R,

(2) (5), R (A, B, C, D, E, P)
F=(A, B, C and P, E, A, CE -> D)

(6), R (W, X, Y, Z)
F=(X, Z, WX -> Y)

(7), R (A, B, C, D)
F=(A, B, B, C, D, B)
Point out which paradigm and explain the reasons

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