0 votes 0 votes relations and fields can be renamed in relational algebra using the renaming operator (a) ρ (b) σ (c) ∅ (d) ⟕ Databases databases relational-algebra + – mohit jain asked Jun 25, 2022 mohit jain 192 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes @mohit+jain (a) ρ …. Name Symbol Operation in relational algebra rho ρ Rename Sigma σ Selection theta θ No operation left outer join ⟕ left outer join Explanation: ρA/B(R) → Rename attribute name B of relation R to a attribute A … Bikram 1 answered Jul 12, 2022 Bikram 1 comment Share Follow See all 0 reply Please log in or register to add a comment.