引言 1902 4 A discipline of analysis,design,implementation, management (可以贯穿于软件创建的全过程，从分析到设计，从文 档到调试，甚至可以渗透到项目管理中) Viewing the relationship between a class and its clients as a formal agreement,expressing each party's rights and obligations. (把类和它的客户程序之间的关系看做正式的协议，描 述双方的权利和义务) Institute of Computer Software 2022-2-27 Nanjing University引言  A discipline of analysis, design, implementation, management （可以贯穿于软件创建的全过程，从分析到设计，从文 档到调试，甚至可以渗透到项目管理中）  Viewing the relationship between a class and its clients as a formal agreement, expressing each party ’ s rights and obligations. （把类和它的客户程序之间的关系看做正式的协议，描 述双方的权利和义务） 2022-2-27 Institute of Computer Software Nanjing University 4