The hierarchical characteristics in multi-representations for geographical features were explored, namely multi-geometries hierarchy, multi-entities hierarchy and multi-attributes hierarchy.

本文探讨了地理空间要素多尺度表达在几何层次、实体层次、属性层次方面的多尺度表现特征。

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With this approach, you map an entire class hierarchy into one data entity, where all the attributes of all the classes in the hierarchy are stored.

使用这种方法，您可以将一个完整类层次结构映射成一个数据实体，而层次结构中所有类的所有属性都存储在这个实体中。

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Listing 2 demonstrates the initial elements and attributes of the hierarchy within an XML schema instance.

清单2展示了一个XML模式实例中的初始元素和属性的层次结构。

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For example, instead of creating a user account, you now can create a user object that includes various attributes that help identify where the user account lives in the network hierarchy.

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