当您使用概念模型来描述资料库中的资料时，可以透过物件查询资料，而不需要在资料库结构描述和物件模型之间来回转译。

When you use a conceptual model to describe the data in a database, you can query data through your objects instead of having to translate back and forth between a database schema and an object model.

youdao

当您使用概念模型来描述资料库中的资料时，可以透过物件查询资料，而不需要在资料库结构描述和物件模型之间来回转译。

When you use a conceptual model to describe the data in a database, you can query data through your objects instead of having to translate back and forth between a database schema and an object model.

youdao