Relational Algebra - Basic Operators
We are examining the basic operators used in Relational Algebra.
Select: It's a selection operator.
Project: We can think of projecting one or more columns and lighting it.
Union: The merge operator.
Set Difference: Gets the difference between two clusters.
Cartesion Product: It makes cartesian product among the sets.
Rename: Renames associations. Used to change names.
Other operators: Set Interseciton / Natural Join / Divison / Aggregate / Outher Join