数据库需求分析 针对超市进销存管理系统，分别对采购部门、销售部门和库存保管部门进行详细的调研和分析，总结出如下的需求信息-Database needs analysis supermarket inventory management system, the purchasing department, sales department and inventory custody department detailed research and analysis, summarized as

一个采购系统，用于采购部门使用的，包含信息的管理，用户管理以及权限的分配-A procurement system, used for the procurement department, including information management, user management, and the distribution of authority