Investigation of BPEL Modeling

The Business Process Execution Language for Web Service (BPEL4WS) is a XML based standard for defining how to integrate Web Services to implement business processes. A BPEL4WS process is defined in terms of its interactions with partner. A partner may provide services to the process and also may require services from the process, or participate in two-way interaction with the process. This report focuses on the modeling of BPEL4WS. Two approaches of modeling BPEL4WS are analyzed. One is modeling BPEL using Unified Modeling Language (UML). The other one is using Collaxa BPEL Designer, which is a commercial product of Collaxa. At the end of this report, the two approaches are compared from various points of view, such as modeling tools, modeling detail level and converting model graphic diagram into BPEL codes. The advantages and disadvantages of two modeling approaches are analyzed also.