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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク relation ： FOLDOC relation 1. A subset of the product of two sets, R : A x B. If (a, b) is an element of R then we write a R b, meaning a is related to b by R. A relation may be: reflexive (a R a), symmetric (a R b => b R a), transitive (a R b & b R c => a R c), antisymmetric (a R b & b R a => a = b) or {total} (a R b or b R a). See equivalence relation, partial ordering, pre-order, total ordering. 2. A table in a relational database. (1995-02-28) スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.