Even still, with physical data models you can reverse engineer from the actual database or from the data definition language (DDL) file.

还可以对实际数据库或数据定义语言(DDL)文件进行反向工程，生成物理数据模型。

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A service component is defined in a service component Definition Language (SCDL) file.

服务组件是在服务组件定义语言(Service Component Definition Language, SCDL)文件中定义的。

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Examples of these artifacts include the web services Definition Language (WSDL) document and the webservices.xml file that assists deployment.

这些构件的例子包括：web服务描述语言(web services Definition Language, WSDL)文档和用于协助部署的webservices . xml文件。

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