要从各种关系数据库集成XML数据，可以将在序列化的xml字符串数据之上使用视图作为一种机制来映射远程和本地XML数据。
To integrate XML data from various relational databases, you can use views over serialized XML string data as a mechanism for mapping between remote and local XML data.
WHERE 子句中的谓词限制关系列 office，而视图把这一列映射到 XML 文档中的路径 /dept/employee/office。
The predicate in the WHERE clause constrains the relational column office, which the view maps to the path /dept/employee/office in the XML column.
设计时的映射结果通常为联合视图，与关系数据库视图类似，可以随后在联合服务器上进行部署或创建。
The result of mapping in design time are typically federated views, similar to relational database views, which then can be deployed or created on the federation server.
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