利用C++语言的模板、继承、授权、多态等面向对象特性，借鉴命令模式，实现了对象在关系数据中的存储，降低应用系统与数据库之间的耦合，提高开发效率。

-The use of C++ language templates, inheritance, authorization, polymorphism and other object-oriented features, drawing command mode to achieve the object relational data storage, application systems and databases to reduce the coupling between the increase development efficiency.