…It was a groundbreaking model that brought abstraction into the world of files and databases. The data model that is enthusiastically supported by practitioners is the ER model. This model grasps real-world information using the concepts of entities (E: entities) and relationships (R: relationships). … *Some of the terminology that refers to the "ER model" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ファイルやデータベースの世界に抽象をもち込んだ画期的なモデルであった。実務家の熱い支持を受けるデータモデルは,ERモデルである。このモデルは,実世界の情報を実体(E:エンティティ)と関連(R:リレーションシップ)の概念で把握する。… ※「ER モデル」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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