Research And Implementation Of A WFMS Based On Authority Set

With computer and network technology generalized and extended, workflow management system becomes more and more popular as office automation. The workflow technology has become the core technology of company's processes define and management, which has great future.Workflow management system is a software system used to accomplish workflow process definition, management and running the instance. Workflow management system includes four main part:workflow definition tool, workflow engine, client UI and workflow management plate. As the generally adaption of workflow at many fields, more and more complicate process needs more advantage of the ability of workflow describe. Workflow management systems focus on task assignment by specify to users and roles in the organization nowadays, which are lack of the ability of specify single and multi authorities to describe the task assignment. So the workflow management systems need to use lots of outside data to control the route of process goes, which do harm to the security of workflow.The task assignment is one of the most important technologies of workflow management; the strategy of task assignment is to describe how to assign the right task and the right time. In the traditional workflow, the user is the minimum unit of task assignment, and the role is the minimum unit of task authority. In real workflow process, the executer which is assigned to specify activity may don't have enough permissions to finish the task, or there may be problem about SoD(seprate of duty).These situations occur when process is designed and when organization and user/role permissions are dynamically modified in process running state.Besides, the complex real workflow process needs greater ability of describing. The advantage of this paper is to present the concept of authority set to solve these problems. The role in workflow has an authority set, which contains actions the role can finish. Organization is static, while the authority set can be changed dynamic. Therefore, the task assignment can specify certain authority set, user or role. By doing this, the descriptive abilities of workflow are improved and authorized limitations and conflicts of duty can be solved.