Modeling Web Application Architectures with UML

Web applications are becoming increasingly complex and mission critical. To help manage this complexity, they need to be modeled. Unified Modeling Language (UML) is the standard language for modeling software intensive systems. When attempting to model web applications with UML, it becomes apparent that some of its components don't fit nicely into standard UML modeling elements. In order to stick with one modeling notation for the entire system (web components and traditional middle tier components), UML must be extended. This paper presents an extension to the UML, using its formal extension mechanism. The extension is designed so that web-specific components can be integrated with the rest of the system's model, and to exhibit the proper level of abstraction and detail suitable for designers, implementers, and architects of web applications.

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