Relation. In mathematics, a relation is a generalization of arithmetic relations, such as "=" and "<", which occur in statements, such as "5 < 6" or "2 + 2 = 4". See relation (mathematics), binary relation (of set theory and logic) and relational algebra. In relational modeling, a relation is a set of tuples, otherwise known as a table. In logic and philosophy, a relation is a two-argument property or predicate.

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