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Cooperative database : ウィキペディア英語版 | Cooperative database
A cooperative database is a type of database that holds information on customers and their transactions. Many companies will contribute information to a database in return for aggregate information on the customers other companies have provided. Such databases are used for promotional mailings, credit card fraud detection and fighting E-mail spam. Alternatively, the term "cooperative database" can be used to describe database systems that incorporate techniques to aid users beyond returning direct answers.〔Wesley W. Chu: Cooperative Database Systems. Wiley Encyclopedia of Computer Science and Engineering, 2008.〕 Such databases can, for example, give explanations as to why a query returns no or few results, detect and report some user misconception suggested by the query, provide justifications for returned answers, or relax query attributes to find "close" but non-precise answers. The fundamental goal is to extend databases towards reflecting the cooperative principle, and in particular, to avoid misleading users by omission of pertinent, contextual detail. ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Cooperative database」の詳細全文を読む
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