8 votes 8 votes Which operation is used to extract specified columns from a table? Project Join Extract Substitute Databases isro2007 databases relational-algebra + – go_editor asked Jun 10, 2016 go_editor 4.5k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Project for column And select for row Option a is correct Nbhardwaj answered May 24, 2020 Nbhardwaj comment Share Follow See all 0 reply Please log in or register to add a comment.