基于UML的需求获取工具的研究与设计-计算机应用专业论文.docxVIP

Y‘77≮ss摘 Y‘77≮ss 摘 要 f UML作为面向对象建模语言的标准已经广泛应用于各个领域，它融合了早 期面向对象建模方法和建模语言的优点，不仅支持面向对象的分析和设计，而且 支持从需求分析到系统实现的软件开发的全过程。用例是UML中捕获需求的技 术，它借助简单的图符和自然语言描述系统与用户或外部环境的交互状况。用例 的引入缩小了开发人员和最终用户的距离，使其在需求方面达成共识，同时用例 模型的好坏也直接关系到软件开发的其他过程和最终产品的成功与否。 然而7在基于UML的面向对象的软件开发过程中，用例经常被错误地使用， 或过于庞大，或缺少结构化的规格描述。而且已有基于UML的CASE-I-具也忽 略了支持构造标准化用例的过程，仅仅提供了用例模型的绘制和说明描述平台。 在本文中我们研究和设计URET(UML．Based Requkemem Elicitation T001) 弥补以上不足。我们提出一种新的用例构造框架来提高用例的质量属性，并且提 供友好的用户接口捕获和管理系统需求，支持结构化的用例生成，获取准确且完 整的软件需求。 关键词：面向对象、UML、CASE、需求工程、需求获取、用例驱动 ， AbstractThe Abstract The Unified Modelling Language has been widely adopted as a standard language for modeling the design of software systems．It unified the best features of different existing object-oriented languages and supported the whole development process from requrirement analysis to system realization．Use case is a technique in UML for capturing the functional requirements，which describes the interactions between external actors and the system under consideration by simple graphical notation and natural language．Use case not only provide a contract between the development organization and the end users,but also directly affected other phases of the software life cycle until the Success ofthe software development． However，in the object-oriented software development process based on UML，Use case is often misused，either too big or short of structured specification．In addition,The existing case tool based Oil UML dosen’t support the process of constructing the standard use case，only providing the drawing and documention ofuse case model． In this paper,we introduce and design the UML-Based Requirement Elicitation Tool to make up above deficiency．We present a new use case construction framework to improve the quality attribution ofuse case．also．Wj provide friendly user interface to capture and manage the system requirement，supporting the generation of structured use case． Keywords：Object-Oriented、UML、CASE、Requirement Engineering、Requirement Elicitation、Use C