* Introduction to Database Systems CSE 444 Lecture 20: Query Execution: Relational Algebra May 21, 2008 * DBMS Architecture How does a SQL engine work ? SQL query  relational…

Relational Algebra Relational Algebra Formalism for creating new relations from existing ones Its place in the big picture: Declartive query language Algebra Implementation…

Lecture 13: Relational Decomposition and Relational Algebra February 5th, 2003 Summary of Previous Discussion FD’s are given as part of the schema. You derived keys from…

Lecture 13: Relational Decomposition and Relational Algebra February 5th, 2003 Summary of Previous Discussion FD’s are given as part of the schema. You derived keys from…

Relational Algebra Relational Algebra Formalism for creating new relations from existing ones Its place in the big picture: Declartive query language Algebra Implementation…