It illustrates the application of MVC design patter in the actual projects together with the development of softwaremanagementsystem.
结合软件管理系统的开发，阐述了MVC设计模式在实际项目中的应用。
2
When you install or update software components, the managementsystem determines which components are already on the device, and then installs only the missing components.
在安装或更新软件组件时，管理系统会判断设备上已经安装了哪些组件，然后只安装缺少的组件。
3
A good Software Configuration Management (SCM) system can help reduce that endemic confusion because it provides a stable environment that lets you control what changes you make and when.