Such an association is further classified into two types: Symmetrical and Asymmetrical Association Reflex. There is no specific symbol allotted to it; however, the relation points back to the same class. Aggregation VS Composition Aggregation and Composition are two subsets of association; however, ...
association: 两者之间存在某种关联即可,很弱的关系,如student and course, 每个学生可以选不同的课,每门课上有不同学生; aggregation: "consist of":整体与部分之间的关系,但这里部分可以脱离整体单独存在,如MP3上所插的耳机,MP3包含耳机,但这个耳机也可以单独存在,或者插在其他电脑上。 composition: 更强的aggrega...
所以,总结来说,聚合(Aggregation)是一种特殊的关联(Association),合成(Composition)是一种特殊的聚合(Aggregation)。 Association->Aggregation->Composition 参考资料 Introduction to Object Oriented Programming Concepts (OOP) and More Understanding Association, Aggregation, and Composition Aggregation vs Composition Wha...
association: 两者之间存在某种关联即可,很弱的关系,如student and course, 每个学生可以选不同的课,每门课上有不同学生; aggregation: "consist of":整体与部分之间的关系,但这里部分可以脱离整体单独存在,如MP3上所插的耳机,MP3包含耳机,但这个耳机也可以单独存在,或者插在其他电脑上。 composition: 更强的aggrega...
We can also indicate the behavior of an object in an association (i.e., the role of an object) using role names. Association vs Aggregation vs Composition The question "What is the difference between association, aggregation, and composition" has been frequently asked lately. ...
所以,总结来说,聚合(Aggregation)是一种特殊的关联(Association),合成(Composition)是一种特殊的聚合(Aggregation)。 Association->Aggregation->Composition 参考资料 Introduction to Object Oriented Programming Concepts (OOP) and More Understanding Association, Aggregation, and Composition ...
在UML中共有6种关系: 依赖(Dependency) 继承(泛化)(Generalization) 实现(Realization) 组合(Composition) 聚合(Aggregation) 关联(Association) 强弱关系:泛化(继承) = 实现 > 组合 > 聚合 > 关联 > 依赖 UML6种关系的模型与实现: 1.泛化(继承)关系 (1)泛化的定义 指... ...
3 UML - association or aggregation relationship? 8 difference between association and aggregation 63 Aggregation vs Composition vs Association vs Direct Association 1 UML Relationships. Aggregation 5 UML - association or aggregation (simple code snippets) 1 Aggregation or composition or simple associ...
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用户根据用例图抽象成类,描述类的内部结构和类与类之间的关系,是一种静态结构图。 在UML类图中,常见的有以下几种关系: 泛化(Generalization), 实现(Realization),关联(Association),聚合(Aggregation),组合(Composition),依赖(Dependency)。 各种关系的强弱顺序: 泛化 = 实现 > 组合 > 聚合 > 关联 > 依赖 ...