在关联建模中，存在一些情况下，你需要包括其它类，因为它包含了关于关联的有价值的信息。对于这种情况，你会使用 关联类 来绑定你的基本关联。关联类和一般类一样表示。不同的是，主类和关联类之间用一条相交的点线连接。图 11 显示一个航空工业实例的关联类-Modeling in the association, the existence of some cases, you need to include other categories, because it contains valuable on the associated information. In view of this, you will use the associated type to bind your basic correlation. Related category and general category like that. The difference is, the main categories and associated with a type of intersection between the line connecting the points. Figure 11 shows an example of the aviation industry association type