Question: Consider following relation with schema R ( A , B , C , D ) and functional dependencies: 1 . ABC, CD , and DA

Consider following relation with schema R(A,B,C,D) and functional dependencies:
1. ABC, CD, and DA.
2. BC, and BD.
3. ABC, DC, and B-D.
a. List all candidate keys
b. Check whether the relation is in 3NF or not.
c. Decompose the relations, as necessary into collections of relations that are in 3NF.
d. Decompose the relations, as necessary into collections of relations that are in BCNF.

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