说明：  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 follows demand. . .)