Relation or relations may refer to: General uses International relations, the study of interconnection of politics, economics, and law on a global level Interpersonal relationship, association or acquaintance between two or more people Public relations, managing the spread of information to the public Sexual relations, or human sexual activity Social relation, in social science, any social interaction between two or more individuals Logic and philosophy Relation (philosophy), links between properties of an object Relational theory, framework to understand reality or a physical system Mathematics A finitary or n-ary relation is a set of n-tuples. Specific types of relations include: Relation (mathematics) Binary relation (or correspondence, dyadic relation, or 2-place relation) Equivalence relation Homogeneous relation Reflexive relation Serial relation Ternary relation (or triadic, 3-adic, 3-ary, 3-dimensional, or 3-place relation) Relation may also refer to: Directed relation Relation algebra, an algebraic structure inspired by algebraic logic Databases and ontology Relational model, an approach to managing data Relation (database), a component of a relational database Relational algebra Relational calculus Relational database, a digital database Relationships (also known as relations), one of the ontology components Art and literature Relation aller Fürnemmen und gedenckwürdigen Historien, the first newspaper Relation (1982 film), a 1982 Japanese short experimental film Relations (album), a 2004 album of cover versions by Kathryn Williams See also Relate (disambiguation) Relationism (disambiguation) Relationship (disambiguation) Kinship, in anthropology and generally, the web of human social relationships, or an affinity between entities because of some characteristics Coefficient of relationship in biology Relative (disambiguation) Relativism Relativity (disambiguation)