entity-relationship model

(redirected from Entity relationship diagrams)

entity-relationship model

(database, specification)
An approach to data modelling proposed by P. Chen in 1976. The model says that you divide your database in two logical parts, entities (e.g. "customer", "product") and relations ("buys", "pays for").

Entity-relationship diagrams can be used to represent a model.

["The entity-relationship model: toward a unified view of data", P.P. Chen, ACM Transactions on Database Systems 1:1 pp 9-36, 1976].
References in periodicals archive ?
Most of the existing conceptual data models are comprised on the basis of traditional data modeling techniques, like relational data model (RDM), object oriented data model (OODM), object relational model (ORM), entity relationship diagrams (ERD), enhanced entity relationship diagrams (EERD) and data flow diagrams (DFD).
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Toad Data Modeler - enables designers, developers and DBAs to easily create and maintain database structures across more than 20 database platforms by building entity relationship diagrams, generating SQL (DDL) scripts, reverse engineering databases, generating detailed HTML and RTF documentation, building data flow diagrams, and exporting to XML and other popular formats.
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