用例驱动需求建模过程的探讨  

Modeling for Use Case Driving Requirement Analysis Process

作　　者：陈枢茜[1] 李辉[2] 

机构地区：[1]苏州大学,江苏苏州215006 [2]徐州师范大学,江苏徐州221116

出　　处：《江苏广播电视大学学报》2007年第3期52-54,共3页Journal of Jiangsu Radio & Television University

摘　　要：需求分析是软件生命周期中的一个重要阶段。用例是一种描述系统需求的方法。用例建模主要是分离出系统活动的参与者和用例,用例模型易于被不同的角色所理解。通过一个ATM系统的实例说明了如何寻找用例,如何构建用例模型以及用例规约,通过“提款”的活动图实现了对用例的进一步求精,展现了用例驱动需求建模的全过程,明确了用例建模的过程要避免功能分解和数据流建模;用例分析技术是一种合成技术;用例建模的核心是用例描述;不要描述系统之外的情况。The requirement analysis is an important stage within the software life cycle. A method for decribing the system requirement is presented. The use case modeling can separate actor and use case in the system actives.. At the same time, the use case modeling is understanded easily. By an example of ATM system, How finding use case , and constructing use ease modeling and use case specification is solved. Through the activity diagram of ＂ drawing＂ process ,the refinement of use case is achieved. The whole process of the use case driving the requirement analysis is shown. Finally, the key problem of the use case modeling is given：To avoid function separation and data stream modeling;The use case analysis technology is compositive one;The core problem of use case modeling is description of the use case.

关 键 词：需求分析 用例 建模 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论]