它能够以关系数据库系统中的层次格式在本机存储XML数据。

It provides the ability to natively store XML data in its hierarchical format within a relational database system.

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现在，假设数据库中的数据已经存储为xml格式。

Now if the data in the database is already stored in XML with.

youdao

在数据库中以xml格式存储数据之后，可以非常高效地查询该数据，因为在运行时无需执行XML解析来实现查询计算。

Once the data is stored in the database as XML, the data can be queried very efficiently, as the XML is not parsed at runtime for query evaluation.

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