在精化阶段，我会建议将概念模型中的业务实体映射到遗留系统中的源数据库。
During the Elaboration phase I would suggest mapping business entities within the conceptual model to the source databases within the legacy systems.
注意概念模型是如何只确定主要业务实体的，例如Customer、Store和Item，以及这些实体之间的关系的。
Notice how the conceptual model only identifies major business entities such as Customer, Store, and Item as well as the relationships between them.
这些类按照特定的概念模型派生自可以将实体物化成对象的支持对象服务的基类从而可以实现跟踪和保存变更。
The classes generated for a particular conceptual model derive from base classes that provide Object Services for materializing entities as objects and for tracking and saving changes.
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