很简单的图书管理系统，包含图书入库 出库 查询等功能 -Very simple library management system, including books warehousing features such as a database query

软件工程实验课，图书管理系统的mdl文件，包括用例，状态图，时序图等。以及实验报告和导出的C++代码。-Mdl files of software engineering experiment course, the library management system, including use cases, state diagram, timing diagram. Lab report and export C++ code.