当流程发生改变时，只需用流程定义工具重新进行流程配置，一般不需要修改程序和数据库。
Operator don't need to modify the programs, redesign the database, only need to configure newly operation flow by flow configuration tool once the flow is changed.
国际工作流管理联盟提出了工作流参考模型，包括：流程定义工具、工作流引擎、被激活的应用接口、工作流客户端应用和流程监控工具。
WfMC has brought out a reference model of workflow management system, which includes process definition tools, workflow engine, invoked APIs, client application and process monitoring tools.
该系统采用工作流技术进行构建，提供了伸缩性较强的审计流程模型定义工具，有利于管理人员对审计流程的快速建模；
The audit workflow′s prototype system which adopts the workflow technology provides a more flexible tool of the audit flow′s model definition for rapid modeling.
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