Category:Entity-relationship models
From Wikimedia Commons, the free media repository
The article Entity-relationship models on Wikipedia projects:de:Entity-Relationship-Modell | en:Entity-relationship model | es:Modelo entidad-relación | fr:Modèle entité-relation | ja:実体関連モデル | ko:개체-관계 모델 | nl:Entity-relationshipmodel | pl:Entity Relationship Diagram | pt:Diagrama entidade relacionamento | ru:ER-модель данных | sr:Модел објекти-везе | zh:ER模型
Entity-Relationship Models (ERM) is an abstract conceptual representation of structured data. Entity-relationship modeling is a relational schema database modeling method, used in software engineering to produce a type of conceptual data model or semantic data model of a system, often a relational database, and its requirements in a top-down fashion. Diagrams created using this process are called entity-relationship diagrams, or ER diagrams or ERDs for short.
Originally proposed in 1976 by Peter Chen, many variants of the process have subsequently been devised.
See also:
Media in category "Entity-relationship models"
The following 44 files are in this category, out of 44 total.
.svg)
.png)
