一种改进的用例建模方法及其在电子政务中的应用  

An Improved Use Case Modeling Method and its Application in E-Government

作　　者：尚佳[1,2] 杨吉江[1,2] 许有志[1,2] 

机构地区：[1]清华大学信息技术研究院Web与软件技术研究中心,北京100084 [2]清华大学信息科学技术国家实验室,北京100084

出　　处：《计算机与数字工程》2009年第9期120-124,共5页Computer & Digital Engineering

基　　金：国家八六三计划(编号:2009AA01Z143);铁道部-清华大学科研计划(编号:J2008X009)资助

摘　　要：用例建模作为一种需求建模方法受到广泛的关注和应用。文章总结了用例建模方法的优点和不足,针对其局限性给出了相应的解决方案,提出了用例建模的改进方法。该方法将传统需求分析思路与用例建模方法有效融合,将分解模式转移至角色模型避免了功能分解,并解决了前置条件降低有效性验证的问题,同时利用可视化建模提高系统模型的易理解性。文章采用改进的用例建模方法对电子文件审批系统进行了需求分析和模型设计,该改进后的用例建模方法可以同时满足用户获取系统价值和引导开发人员系统开发的两方面需求。Use case modeling is one of the most popular requirement modeling methods. This article summarizes the advantages and disadvantages of use case modeling method in requirement analysis and function modeling, introduces the process of modeling and brings up an improved method. This improved method can integrate the traditional requirement modeling theory and use case method, creat the role model to avoid breaking up the function in the system. Also, it can solve the problem of reducing the effectiveness of verification and make the system model easy to understand by using visualized modeling method. Then, it is used in an e-government approving system, which can satisfy both users and developers, not only to achieve value from the system, but also instruct to further development.

关 键 词：用例建模 用例 电子政务 需求分析 可视化 

分 类 号：N945.12[自然科学总论—系统科学] TP391[自动化与计算机技术—计算机应用技术]