... 一般而言，有三种关联关系之基数，分别为一对一(1：1)、一对多(1：N)或多对多(M：N)。 实现化关系(Realization) 「继承是应用在关系密切(is a)的类别中，例如「卡车继承「车子(Truck is a car)。 ...
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动态关系使用类似的表结构将键属性彼此关联；否则，实现实例创建和删除自动化就需要提供额外的上下文信息。
Dynamic relationships use a similar table structure to associate key attributes with each other; however, automating the creation and deletion of instances requires additional context information.
所谓的实现是用例建模中的一个规范化术语，它指示了规格与各种执行之间的关系。
Realization is a formal term in use case modeling that indicates the relationship between a specification of something and its various implementations.
在中日关系实现正常化的过程中，一些日本人士起到了至关重要的作用。
While in the process of realizing normalization of relations between China and Japan, some Japanese played a vital role.
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