Based on the analysis of the basic concepts and features of workflow and business object, etc., scheduling algorithms for workflow engine and data flow of inter-activity were proposed.
在分析了工作流、业务对象等基本概念和特征之后，针对过程中活动间的数据流，提出了工作流引擎和数据流的调度算法。
The scheduling platform describes all the nodes and connections by PDPEL, so that the workflow engine can schedule the activities.
调度平台用PDPEL对各类型节点和连接弧的形式化描述，以便工作流引擎进行项目调度。
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