1 votes 1 votes Can someone explain this question? Databases made-easy-test-series databases joins + – rahul sharma 5 asked Dec 27, 2017 • edited Mar 7, 2019 by Aditi Singh rahul sharma 5 360 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes OPTION A if R is a relation and it decomposed into two relation R1 and R2. if relation is lossy then R1JOIN R2$\supset$ R. if relation is lossless then R1 JOIN R2=R. so R1 JOIN R2 $\supseteq$ R abhishekmehta4u answered Mar 28, 2018 abhishekmehta4u comment Share Follow See all 0 reply Please log in or register to add a comment.
