模型提供了系统的蓝图，模型是包括重要的内容，忽略了细节。本系统是采用面向对象的方法进行开发，因此采用面向对象的建模，这种建模重点是对象和类。面对如今众多的面向对象建模语言的出现，建模语言走向成熟，本系统采用UML作为建模语言，Ration Rose做为面向对象的建模工具-The model provides a blueprint for the system model is including the important content to ignore the details. This system is developed using object-oriented approach, so the use of object-oriented modeling, the modeling focused on objects and classes. Faced with the emergence of the now many object-oriented modeling language, modeling language matured, the system uses UML as the modeling language, Ration Rose, as the object-oriented modeling tool