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User表:
UsedID(主键)
UserName
寄送信息:(单个用户可以对应到多个地址)
MessageId(主键)
UserId(主键)
Address
tel-phone
封面展示:(每一本书对应一张需要展示的图片)
bookId(主键)
Image
Book表:
BookId(主键)
BookName
价格
Author
引言
大分类
简介表:(反正简介不会超过太多张对吧)
引言(这样我们经过排序之后就可以展示书本简介)
简介图片
购物车:
数量
订单表:(我们甚至可以由这个计算出每本书销售数量)
Statue：待付款,待发货，待收货，待评价，订单已经完成，退货中
