BSWB: To Construct Sound Workflow Model

With the development of workflow technology and the mature of corresponding modeling tools, more and more enterprise businesses are processed by workflow system. Although so many model methods, such as WF-net, Petrinet, BPMN and SCXML, etc., are proposed, it is a difficult task to guarantee the soundness property of workflow model. Generally, this problem is handled by soundness analysis after the design of workflow models. In this paper, a new method BUM (bottom-up model), which based on BSWB (Basic Sound Workflow Block), is proposed. Rather than analysis the soundness of workflow specification after the model is built, BSWB uses sound workflow blocks to construct workflow model. Thus, the soundness property can be guaranteed. Additionally, BSWB can construct workflow specification in different abstract levels which is very useful for understanding and maintaining workflow systems. With this method, workflow systems can be designed and maintained flexibly and economically.