In many cases, the back-end database is actually a mainframe database such as IMS, IBM's mainframe - based hierarchical DBMS.

在很多情况下，后端数据库实际上是大型主机数据库，例如IBM基于大型主机的分层dbms IMS。

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Native XML storage implies storing XML data intact with full DBMS knowledge of the data's internal hierarchical structure.

原生xml存储意味着按原样存储XML数据，DBMS完全了解数据的内部层次结构。

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Storing the XML in its native hierarchical format within a hybrid DBMS.

在混合型DBMS中以原有的层次化格式存储XML。

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