Composition of relations

Composition of relations is a fundamental concept in mathematics and computer science, particularly in the fields of set theory, relational algebra, and database theory. It describes how to combine two relations to form a new relation. If we have two relations \( R \) and \( S \): - Relation \( R \) is defined on a set of elements \( A \) and \( B \). - Relation \( S \) is defined on a set of elements \( B \) and \( C \).