What does the following relational operation perform?
Posted: Thu Jul 14, 2022 8:54 am
ρx(A1,A2,A3…) (E)
a) It returns the result of expression E with the previous attribute names
b) It returns the result of expression E renaming the attributes as A1, A2, …
c) It returns the result of the relation E but saves the old attributes
d) None of the mentioned
a) It returns the result of expression E with the previous attribute names
b) It returns the result of expression E renaming the attributes as A1, A2, …
c) It returns the result of the relation E but saves the old attributes
d) None of the mentioned