说明：  功能介绍 实现超市商品信息的管理 功能包括商品信息的添加,商品信息的删除,商品信息的修改,商品信息的浏览, 商品信息的查询,商品
(Function introduction to realize the management function of supermarket commodity information including the addition of commodity information, the deletion of commodity information, the modification of commodity information, the browsing of commodity information, the inquiry of commodity information, and commodity information)