Rhapsody的培训讲义，主要讲解了面向对象的概念、方法和UML的使用、面向对象的分析和设计工作、OO设计的设计原则及一些典型的设计模式。-Rhapsody training courseware, mainly on the use of object-oriented concepts, methods and UML, object-oriented analysis and design, the design principles of OO design, and some typ