Relational Algebra Procedural language Six basic operators select:o project:.Π union: set difference:- Cartesian product:x rename:p The operators take one or two relations as inputs and produce a new relation as a result. Database System Concepts-6th Edition 6.3 ©Silberschat乜，Korth and SudarshanDatabase System Concepts - 6 6.3 ©Silberschatz, Korth and Sudarshan th Edition Relational Algebra Procedural language Six basic operators select:  project:  union:  set difference: – Cartesian product: x rename:  The operators take one or two relations as inputs and produce a new relation as a result