UML (Unified Modeling Language) knowledge learning

1、UML chart , Try to be concise and easy to understand ; Each diagram describes only one or a limited number of information , Ignore irrelevant information ;
2、UML A diagram is a graphical representation of relationships ;
3、 When defining two classes , Or multiple classes , How classes interact , Division of responsibilities of classes ;
4、 Use case diagram , Class diagram , The analysis model , Interaction diagram （ Sequence diagrams and collaboration diagrams ）,UML Activity diagrams ,UML State diagram ; The design model ;
5、 Software object frame Problem domain thought ;
6、 Designed to implement services ;
7、 Static modeling （ Software membership ）, Dynamic modeling （ Interaction between objects ）;
8、 Software relationship information is fixed ： Document fixation ;
9、 Symbol ： Expression method ;
10、UML： Graphical representation ;
11、 idea ;
12、 object-oriented analysis （ Discover and describe objects ） Design （ Define the object , Object collaboration implementation requirements ）;
13、” Northeast people are all living Lei Feng “ The Northeast inherited , Living Lei Feng inherited , The northeast people inherited the living Lei Feng ; Live Lei Feng function ： Help others ;
14、 Problem areas ： What to do .
15、 Define use cases , Define domain models , Define interaction diagram , Define design class diagram ;