0 votes 0 votes Given relation catalog(sid, pid, cost) Find pairs of sids such that the supplier with the first sid charges more for some part than the supplier with the second sid what is the relational algebra expression for this? Databases databases relational-calculus relations relational-algebra joins + – aditi19 asked May 7, 2019 aditi19 937 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply aditi19 commented May 7, 2019 reply Follow Share is this expression correct? 0 votes 0 votes Aditya Patel commented May 7, 2019 reply Follow Share Yes you are correct. 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes Above answer is correct Shashwat Pandey answered Oct 22, 2020 Shashwat Pandey comment Share Follow See all 0 reply Please log in or register to add a comment.