1) dependency preservation
2)lossless join
a)If a relation is in 3NF , which of the above points is guaranteed.
b)If a relation is in BCNF , which of the above points is guaranteed
[ I am confused right now, can I say , if a relation is in BCNF, then is it by default lossless/dependency preserving straight away , or is it the fact that,if I derive BCNF decomposed relations using a particular algorithm, then only I can say that the decomposed relations is lossless/dependency preserving same goes for 3NF].
Please help!