Finally, we summarize the characteristics of the top-level object model hierarchy, and briefly describe the future work we are going to study farther.

最后，该文对顶层对象模型体系的主要特点进行了总结，并简要说明了今后的主要研究方向。

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Now we need to map our object hierarchy to our table model.

现在我们需要把对象层次结构映射到表模型。

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For example, business analysts can use class or object diagrams to model a business's current assets and resources, such as account ledgers, products, or geographic hierarchy.

举例来说，业务分析师可以使用类或对象图，来为当前的资产和资源建模，例如分类账，产品或地理层次。

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