摘要：
Class DiagramFigure 4.30 Elements of the class diagram关联，多重性； 聚合aggregation。In class diagrams, as shown in Figure 4.30, we work with the following elements:ClassA class represents a relevant concept from the domain, a set of persons, objects, or ideas that are depicted in the IT system:Examples of c 阅读全文
摘要：
源地址：http://sourcemaking.com/uml/modeling-it-systems/structural-view/generalization-specialization-and-inheritance Generalization, Specialization, and InheritanceTerms such as superclass, subclass, or inheritance come to mind when thinking about the object-oriented approach. These concepts are very i 阅读全文