What do you mean by relational algebra?
Database Management System
Computer Science Engineering
491
Grace
Relational algebra refers to a procedural query language that takes relation instances as input and returns relation instances as output. It performs queries with the help of operators. A binary or unary operator can be used. They take in relations as input and produce relations as output.
Relational Algebra is a procedural query language. Relational algebra mainly provides a theoretical foundation for relational databases and SQL.
Five basic operations in relational algebra: Selection, Projection, Cartesian product, Union, and Set Difference.