Assignment, Rename Operators

Assignment

• As the name suggests, the assignment operator allows us to assign the result of one query to a variable $$ \quad Physics \leftarrow \sigma_{\,dept_name\,=\,^"Physics^"}\, (instructors) $$

Rename

• The rename operator allows us to rename the result of a query under another name \(\(\quad \rho_{x(A_1, A_2, ... A_n)}(E)\)\)