A UML profile for goal-oriented and use case-driven representation of NFRs and FRs

Sam Supakkul, L. Chung
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引用次数: 52

Abstract

In order for a software system to be of value, it should meet both functional requirements (FRs) and non-functional requirements (NFRs). Concerning FRs, UML has been used as the de facto object-oriented analysis and design notation. Concerning NFRs, the NFR framework extends, and complements, UML, by treating NFRs as potentially conflicting or synergistic softgoals to be achieved, thereby allowing for the consideration of alternatives and analysis of trade-offs among the alternatives. Albeit the complementary nature of the two, UML and the NFR framework offer two different notations -syntactically, semantically and visually, which makes it difficult to produce requirements models that integrate both FRs and NFRs. In this paper, we propose an integrated modeling language by extending UML with the NFR framework using the standard extension mechanism called UML profile where we define a metamodel to represent the concepts in the NFR framework and identify the extension points for integrating the two notations. We also show how CASE tools may use this profile in building an integrated requirements model based on a model of the well known London ambulance case study.
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NFRs和FRs的面向目标和用例驱动表示的UML概要文件
为了使软件系统有价值,它应该同时满足功能需求(FRs)和非功能需求(nfr)。关于FRs, UML已经被用作事实上的面向对象的分析和设计符号。关于NFR, NFR框架扩展并补充了UML,通过将NFR视为潜在的冲突或要实现的协同软件目标,从而允许考虑备选方案并分析备选方案之间的权衡。尽管两者具有互补性,UML和NFR框架提供了两种不同的符号——语法上、语义上和视觉上,这使得生成集成FRs和NFR的需求模型变得困难。在本文中,我们提出了一种集成的建模语言,通过使用称为UML概要文件的标准扩展机制扩展UML和NFR框架,其中我们定义了一个元模型来表示NFR框架中的概念,并确定了集成两种符号的扩展点。我们还展示了CASE工具如何在基于著名的伦敦救护车案例研究模型的基础上使用这个概要文件来构建一个集成的需求模型。
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