本仓库内为2021年秋季学期中山大学数据库课程的期末大作业。主要内容为设计并开发一个图书销售管理系统，实现其销售与退货功能：
- 销售功能：输入顾客想要购买的书籍信息，自动显示此书的库存量，如果可以销售，则打印销售单并修改库存，同时把此次销售的有关信息添加到日销售库中。
- 退货功能：顾客把已经购买的书退还给书店，系统输出一份退货单并自动修改库存量，把本次退货的信息添加到退货库中。
文件说明：
- 设计报告.pdf ：实验报告，包含功能需求分析，系统设计。系统功能实现等内容；
- src.cpp：实现客户端交互功能的源代码，使用C++语言
- 源程序：文件夹内为图书销售管理系统的MySQL设计与实现
This is the final assignment of the database course of Sun Yat-sen University in the autumn semester of 2021. The main content is to design and develop a book sales management system to realize its sales and return functions:
- Sales function: Enter the information of the book that the customer wants to buy, automatically display the inventory of the book, if it can be sold, print the sales order and modify the inventory, and add the information about the sale to the daily sales library.
- Return function: The customer returns the purchased book to the bookstore, the system outputs a return form and automatically modifies the inventory, adding the information of the return to the return library.
Document description:
- 设计报告.pdf: Experiment report, including functional requirements analysis, system design. System function realization and other contents;
- src.cpp: Source code for client interaction, using C++ language
- 源程序: The folder for the book sales management system MySQL design and implementation