1 votes 1 votes Databases gateforum-test-series databases relational-algebra + – Gupta731 asked Nov 2, 2018 • edited Mar 15, 2019 by ajaysoni1924 Gupta731 387 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply Utkarsh Joshi commented Nov 2, 2018 reply Follow Share The result will be an empty set. So D is correct. 2 votes 2 votes Gupta731 commented Nov 2, 2018 reply Follow Share Yes, that's what I was thinking of. Thank you 0 votes 0 votes Please log in or register to add a comment.