実体関連モデル
1. Entity–relationship modelIn software engineering, an entity-relationship model (ER model for short) is an abstract and conceptual representation of data. Entity-relationship modeling is a database modeling method, used to produce a type of conceptual schema or semantic data model of a system, often a relational database, and its requirements in a top-down fashion. Diagrams created by this process are called entity-relationship diagrams or ER diagrams.
Read “Entity–relationship model” on English Wikipedia
Read “実体関連モデル” on Japanese Wikipedia
Read “Entity–relationship model” on DBpedia
Read “Entity–relationship model” on English Wikipedia
Read “実体関連モデル” on Japanese Wikipedia
Read “Entity–relationship model” on DBpedia
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