neha singh
asked
Mar 18, 2017
729
views
Relation x=(d,b,c,f,g,h) {d=bc ,g=hd} is decomosed into a=(d,b,c) e=(d,f,g,h) which of the following is correct?
a) lossy and dependency preservingb)lossless and dependency preservingc)losslsess and no dependency preservingd)lossy and not dependency preserving