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) (an elementary treatment of binary relations) Binary relation (or diadic relation – a more in-depth treatment of binary relations) Equivalence relation Homogeneous relation Reflexive relation Serial relation Ternary relation (or triadic, 3-adic, 3-ary 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 (film), a 1982 Japanese experimental short film by Toshio Matsumoto Relations (album), a 2004 album of cover versions by Kathryn Williams
Linguistics
Grammatical relation, a functional relationship between constituents in a clause.
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)