NationMaster - Encyclopedia: Relation

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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 property or predicate ranging over more than one argument.

Relationship, Interpersonal relationship

This is a disambiguation page: a list of articles associated with the same title. If an internal link referred you to this page, you may wish to change the link to point directly to the intended article.

Categories: Disambiguation | Data modeling Wikipedia does not have an article with this exact name. ... Wiktionary logo Wiktionary is a Wikimedia Foundation project intended to be a free wiki dictionary (including thesaurus and lexicon) in almost every language. ... Euclid, detail from The School of Athens by Raphael. ... In mathematics, a finitary relation is defined by one of the formal definitions given below. ... In mathematics, the concept of binary relation, sometimes called dyadic relation, is exemplified by such ideas as is greater than and is equal to in arithmetic, or is congruent to in geometry, or is an element of or is a subset of in set theory. ... // Introduction The concept of a relational algebra is an offshoot of predicate logic. ... It has been suggested that Relational database be merged into this article or section. ... In mathematics, a tuple is a finite sequence of objects (a list of a limited number of objects). ... In a relational database (RDB), a table is a set of data elements (cells) that is organized, defined and stored as horizontal rows (records) and vertical columns (fields) where each item can be uniquely identified by a label or key or by itâ€™s position in relation to other items. ... It has been suggested that Predicate calculus be merged into this article or section. ... The Philosopher (detail), by Rembrandt Philosophy is a study that includes various diverse subfields such as aesthetics, epistemology, ethics, logic, and metaphysics. ... The word property, in philosophy, mathematics, and logic, refers to an attribute of an object; thus a red object is said to have the property of redness. ... In mathematics, a predicate is a relation. ... See: relational model personal relationship mathematical relationship, including: inverse relationship direct relationship relation (mathematics). ... This article is in need of attention. ...

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Relation (mathematics) - Wikipedia, the free encyclopedia (1777 words)
	Relations that involve two 'places' or 'roles' are called binary relations by some and dyadic relations by others, the latter being historically prior but also useful when necessary to avoid confusion with binary (base 2) numerals.
	From the more abstract viewpoints of formal logic and model theory, the relation L is seen as constituting a logical model or a relational structure that serves as one of many possible interpretations of a corresponding k-place predicate symbol, as that term is used in predicate calculus.
	Another variation reserves the term 'relation' to the corresponding logical entity, either the logical comprehension, which is the totality of intensions or abstract properties that all of the elements of the relation in extension have in common, or else the symbols that are taken to denote these elements and intensions.

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