The application of business activity diagram to capture use case

At present, use case has been used in many large-scale application systems and has achieved good results. At the same time, it has also showed a strong applicability and has become the mainstream technology in object-oriented software analysis and design. So far, however, there is not a standardized approach to capture use cases in a complex system. It is arbitrarily controlled by designers in most practical applications. For this reason, according to the concept and characteristics of use case, this paper discusses an approach based on business activity diagrams to capture use cases. Then, some related rules are established to capture high quality use cases from business activity diagrams. Finally, a practical case study is given to illustrate the application of the proposed approach.