The core of work flow model is the definition of business process which includes the basic activities and the temporal relation between them.

工作流模型的核心是业务过程的定义，包括组成过程的基本活动以及活动之间的时序关系。

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A work flow model, simplified according to the character of governmental document working curse, is set up on relational database.

根据公文流转的特点，对工作流模型进行了简化，并将这个简化模型建立在关系型数据库中。

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The structure of simplified work flow model is a tree, and governmental document run and join from end to root on the tree with no separation.

简化后的公文工作流模型呈树型结构，公文从树的枝节点向根节点流转、汇合，整个流转过程没有分支。

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