To calculate status of a work item, we need to use global variables to store the data and the work item in the same level.

为了估计工作项的状态，我们需要使用全局变量，来将数据与工作项目存储在同一层次。

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After the HTML table be converted into XML, we need to perform data integrated at the schema level, that is to generate global schema.

网上表格内容被转换为XML文档后，集成这些XML文档首先需要进行模式集成，即产生全局模式。

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After the HTML table be converted into XML, we need to perform data integrated at the schema level, that is to generate global schema.

网上表格内容被转换为XML文档后，集成这些XML文档首先需要进行模式集成，即产生全局模式。

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