您可以使用在应用程序的其余部分中使用的相同模型，在必要时创建复杂的脚本对象等等。

You can use the same models the rest of your application USES, create complex script objects where required, and more.

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MQL提供一个功能强大的表达能力用于从复杂模型中查询数据，例如一个基于模型对象的左内联查询。

MQL provides a powerful expression ability to query data from complex models, such as a left inner joint query against model objects.

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更为有效的表达方法，例如实体关系或者对象模型，可以用来解决复杂的数据映射或者查询异构数据。

More powerful representations, such as entity/relations or object models, are needed if one wants to perform a complex mapping of databases to each other or to query across heterogeneous databases.

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