Data model: Difference between revisions

Revision as of 08:28, 18 October 2004

Revision as of 13:55, 18 October 2004

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If a relational model is used, sets of specific constraints ([[candidate key]]s, [[foreign key]]s) have to be defined (using the appropriate language as defined for the general model, e.g. [[SQL]]).

== Tools for Creating a Data model for an Application ==

The [[Entity-Relationship Model]] method is used to establish a ___domain specific data model. Other examples like the [[Functional Data Model]] and the [[Object Role Model]] also describe subsets/aspects of a data model.

While simple data models consisting of view tables or objects can be created "manually" large applications need a more systematic approach. The [[Entity-Relationship Model]] method is used to establish a ___domain specific data model. Other methods like the [[Functional Data Model]] and the [[Object Role Model]] also describe subsets/aspects of a data model and the application based on it. The [[Unified Modeling Language]] (UML) is another method more related to object-oriented data models. Especially the "Object Model" part has a number of parallel representations with the Entity-Relationship Model.

[[Category:Data management]]