The problems says to find violations for bcnf, but as far as i understand, some dependencies even violate 2nf and 3nf. I am confused . I will be so thankful if somebody helps me with solving even one of these four questions.
consider a relation R(a, b, c, d, e, f). for each 1-4 dependencies specify which dependencies (if any) violate the bcnf then decompose the relation, as necessary, into collections of BCNF relations.
1. AD → B, C → D, BC → A, B → D
2. BC → E, C → AB, AF → CD
3. ABF → D, CD → E, BD → A
4. AB → D, BCD → EF, B → C