它允许您以灵活的方式来对这些域类型进行建模—成果是一个完备的文档，它没有模式，而是使用与其他文档大致相似的蓝图。
It allows you to model these types of domains in a flexible manner - as a self-contained document that contains no schema but, instead, a roughly similar blueprint to other documents.
管理这样一个关系在概念上同现代关系数据库技术中的关系建模相似。
The ability to manage such a relationship is similar in concept to relationship modeling in modern relational database technology.
从上面可以看出，虽然不同建模方法的图形符号存在差异，但用于建立控制流模型的主要元素却十分相似。
We can see that although the graphical notations differ, the main elements for modeling control flow are very similar across the different modeling approaches.
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