Relational Algebra is a __________ query language that takes two relations as input and produces another relation as an output of the query.
Which of the following is a fundamental operation in relational algebra?
Which of the following is used to denote the selection operation in relational algebra?
For select operation the ________ appear in the subscript and the ___________ argument appears in the paranthesis after the sigma.
The ___________ operation, denoted by −, allows us to find tuples that are in one relation but are not in another.