Object–role modeling: Difference between revisions

Revision as of 00:06, 21 July 2016

Revision as of 21:18, 1 August 2016

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:''Not to be confused with [[{{Distinguish|Object-relational mapping]].}}

[[File:ORM-diagram-tkz-orm.png|406px|thumb|example of an ORM2 diagram]]

'''Object-role modeling''' ('''ORM''') is used to model the [[semantics]] of a [[universe of discourse]]. ORM is often used for [[data modeling]] and [[software engineering]].

An object-role model uses graphical symbols that are based on first order predicate logic and set theory to enable the modeler to create an unambiguous definition of an arbitrary universe of discourse. Attribute free, the predicates of an ORM Model lend themselves to the analysis and design of [[graph database]] models in as much as ORM was originally conceived to benefit relational database design.

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== References ==

{{reflistReflist|2}}

== Further reading ==

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== External links ==

{{commonsCommons category|Object role modeling}}

* [http://www.ormfoundation.org/ The ORM Foundationfoundation]

* [http://www.orm.net Terry Halpin's ORM site]

* [http://factmodeling.org/ FactModeling.org dedicated to Fact-Based Modeling]

{{DEFAULTSORT:Object Role Modeling}}