With the database classes, you use a recordset object to select and access the result set.

通过数据库类，可以使用记录集对象来选择和访问结果集。

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You can then use methods on those classes and their instances to interact with the database, instead of writing SQL.

然后您可以使用这些类及其实例上的方法来与数据库交互，而不用编写 SQL。

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XML mapping files describe how a class maps to a particular table in the database, along with any relationships that the class has with other classes.

XML 映射文件描述了如何将类映射到数据库中具体的表，并描述了类与其他类的关系。

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