A modeling approach for use-cases model in UML

UML (Unified Modeling Language) use-cases model is an essential part of software systems model, and significantly affects the effectiveness of software development. So far, there is large arbitrariness because there is not a standardized modeling approach for UML use-cases model. For this reason, this paper introduces a practical modeling approach for it. Firstly, the organization model of domain is built; Secondly, using the activity diagram describes the workflow model of domain; Thirdly, the use-cases model of business is built according to activity diagram; Fourthly, the use-cases model of domain is transformed into the use-cases model of software system; Finally, This process is an iterative loop and refinement process. Further, a case study using this approach is presented. Application results show that this approach is effective in software development.