Category:Entity-relationship models

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.

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Media in category "Entity-relationship models"

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