翻訳と辞書 Words near each other ・ data link layer ・ data link level ・ data link provider interface ・ data link switching ・ data logger ・ data logging ・ data management language ・ data manipulation language ・ data mart ・ data mining ・ data model ・ data modeling ・ data modelling ・ data over cable service interface specification ・ data over cable systems interface specifications ・ data packet ・ data parallel haskell ・ data path ・ data processing ・ data protection act Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク data model ： FOLDOC data model The product of the database design process which aims to identify and organize the required data logically and physically. A data model says what information is to be contained in a database, how the information will be used, and how the items in the database will be related to each other. For example, a data model might specify that a customer is represented by a customer name and credit card number and a product as a product code and price, and that there is a one-to-many relation between a customer and a product. It can be difficult to change a database layout once code has been written and data inserted. A well thought-out data model reduces the need for such changes. Data modelling enhances application maintainability and future systems may re-use parts of existing models, which should lower development costs. A data modelling language is a mathematical formalism with a notation for describing data structures and a set of operations used to manipulate and validate that data 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.