Relation

A relation is a connection or association between two or more things, where specific pairs of items are linked based on a certain rule or property. For example, in a university database, a relation can connect students to courses they are enrolled in. In mathematics, relations define how two sets of items are related, like "greater than" or "parent of." Think of relations as the way elements are linked, showing how they are connected or associated according to a specific criterion, helping organize and understand relationships within data or concepts.