Query on functional dependency


#1

Consider the relation R(ABCDEG) and FD′s are
{AB→C,AC→B,AD→E,B→D,BC→A,E→G}
then the decomposition{ABC,ACDE,ADG}

1)is lossless and not dependency preserving
2)is not lossless and dependency preserving
3)is lossless and dependency preserving
4)is not lossless and not dependency preserving