该环境模型为PM规程所需的较低层功能和服务的定义和描述提供了基础。
This context model provides a basis for the definition and description of lower-level functions and services that the PM discipline requires.
在一个SOA实现试图去表述企业范围的功能时，它需要操作基于一个定义良好的企业数据模型去进行操作。
As an SOA implementation is attempting to represent enterprise-wide functionality it needs to operate based on a well-defined enterprise data model.
但是，组成它们的项目是一个普通的定义模型，由主要的功能性程序、界面与其他 ABB 之上的附件组成。
What unites them, though, is a common definition model that comprises main functional applications, interfaces, and dependencies upon other ABBs.
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