Business process modeling based on role and rule

Workflow is the automation of a business process in whole or part.To abstract the business process and model business process modeling is the first step of workflow management activity-centered workflow management system emphasizes process execution so much that the role of the organization is ignored.Business process is modeled by roles and rules,and proposes a one-dimensional model only including roles is proposed.To achieve business goals,the roles interact with each other though messages and processes are controlled bye rules— — ECAA rules.The messages from one role are processed by rule engines then transmit to another.Every role has it's own rules.