Q. R (A,B,C,D) is a relation. Which of the following does not have a lossless join dependency preserving BCNF decomposition? (Solved)
1. a->b, b->cd
2. a->b, b->c, c->d
3. ab->c, c->ad
4. a->bcd
- d. a->bcd
1. a->b, b->cd
2. a->b, b->c, c->d
3. ab->c, c->ad
4. a->bcd