进销存的数据库源代码。可参考相关的表的设计以及相关的主键及关系的连接。-Invoicing of the database source code. Refer to the related table design and the associated primary key and relationship connections.

适用于做课程设计，实现的内容非常简单易懂，有教数据库建表，直接将项目导入就可以运行了(Suitable for curriculum design, the content is very simple and easy to understand, there is a teaching database table, the project can be directly imported to run.)