Extended Entity -relationship Models 用扩展实体关系模型
Figure 6: Reverse engineered meta-model for entity relationship models.
图6：实体关系模型的反向工程元模型。
These models can be very detailed, showing full entity, relationship and attribute structures and can even have higher-level visualization of the core relationships between coarse grained concepts.
这些模型可能非常详细，显示全部的实体、关系和属性结构，甚至具有粗粒度概念之间的核心关系的更高级的可视化表示。
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