A Perspective for Dynamic Workflow Analysis: Role-based Workflow Models

T n ( b bstract: Confronted with changing environments, dynamicity is inevitable and business rocesses are characterized by indefiniteness, which requires that workflow systems should be lexible and dynamic. Most of current workflow systems are activity-based, paying little ttention to people and their roles. However, it is noteworthy that ignore of roles maybe one of he main reasons for lack of dynamicity in most of present workflow products. In essence, a orkflow is goal-driven and it is roles and their coordination that attain business goals. oreover, exceptions are often attributed to and settled by roles. This paper discusses a ole-based dynamic workflow model, which has advantages over the activity-based workflow odel in terms of flexibility. The research mainly focuses on the correlation between roles and he flexibility of workflow systems. And a new representation of role-based workflow models is iven, integrating message sequence charts and ECA rules. ey Words: Role; dynamic workflow; message sequence chart