Relational Algebra is a Procedural Query Language which contains a set of operations that take one or two relations as input and produce a new relationship. Relational algebra is the basic set of operations for the relational model. The decisive point of relational algebra is that it is similar to the algebra which operates on the number.
There are few fundamental operations of relational algebra:
- select
- project
- set difference
- union
- rename,etc.