翻訳と辞書 Words near each other ・ Data model ・ Data constrained modelling ・ Data Control & Systems ・ Data Control Block ・ Data control language ・ Data conversion ・ Data converter ・ Data corruption ・ Data cube ・ Data curation ・ Data custodian ・ Data de Groove ・ Data deduplication ・ Data deficient ・ Data Defined Storage ・ Data definition language ・ Data definition specification ・ Data degradation ・ Data dependency ・ Data descriptor ・ Data Design Interactive ・ Data Design System ・ Data Desk ・ Data dictionary ・ Data differencing ・ Data diffusion machine ・ Data Discman ・ Data discovery ・ Data Discovery and Query Builder ・ Data discrimination 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 definition language ： ウィキペディア英語版 Data definition language A data definition language or data description language (DDL) is a syntax similar to a computer programming language for defining data structures, especially database schemas. ==History== The concept of the data definition language and its name was first introduced in relation to the Codasyl database model, where the schema of the database was written in a language syntax describing the records, fields, and sets of the user data model. Later it was used to refer to a subset of Structured Query Language (SQL) for creating tables and constraints. SQL-92 introduced a schema manipulation language and schema information tables to query schemas. These information tables were specified as SQL/Schemata in SQL:2003. The term DDL is also used in a generic sense to refer to any formal language for describing data or information structures. 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「Data definition language」の詳細全文を読む 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.