The answer was given based on wrong entries which is not in the question.Let $r$ be a relation with attribute set $R$ and $s$ be a relation with attribute set $S$ such

that $S$ subet $R.$

A$)$ Let $r(A,B,X,Y)$ and $s(X,Y)$ be the relations displayed below. Compute $rs.$

B$)$ Verify the following equation in the above table:

$rs={}_{R-S}(r)-{}_{R-S}(({}_{R-S}(r)s)-{}_{R-S,S}(r))$Values in r in line $5$ is $($c$,$d$,$w$,$x$)$ as per the question but in your answer you have taken as $5.($d$,$w$,$y$,$z$).$Please re write all steps and correct your anwers for part A and part B based on the given corerect question $.$Wrong inputs in your steps will not get any marks.Please note that each part A and part B carries $5$ marks