What are the main operations of relational algebra?

The main operations of relational algebra are

1. The select Operation

2. The projection operation

3. The union operation

4.The set different operations

5.The Cartesian-product operation.

6.The rename operation.

7.Additional operations.

8.The Set-Intersection operations.

9.Natural-join operations.

10.Division operation.

11.The Assignment operation.