Data model: Difference between revisions

Revision as of 11:44, 22 December 2006

Revision as of 11:50, 22 December 2006

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Business requirements are normally represented in an abstact [[semantic data model]] and then transformed into a more concrete ''data model instance'' from which a physical [[database]] is created. For more information on the tools and techniques of data modelling, see [[Data modeling|data modelling]].

For example, a [[Data modeling|data modeller]] may use the [[http://www.ca.com ERwin]] data modelling tool to create an [[Entity-relationship model|ERD]] of the [[Corporate data repository|corporate data repository]] for some corporate business. This model is transformed into the [[relational model]], which in turn generates an [[Oracle Corporation|Oracle]] [[relational database]].

== External links==