0..n
1
1..n
orderitem
+ itemid:Sttring+ count:String+ subtotal:String+ pid:String+ uid:String
User
+ uid:Integer+ username:String+ password:Integer+ reallyname:String+ email:String+ sex:String+ phone:Integer- address:String
+ regist()+ login()+ shopping()+ sarchproduct()
Orders
+ oid:Integer+ ordertime:String+ phone:String+ address:String+ state:int+ total:Integer
Product
+ pname:String+ is_hot:int+ image:String+ pdate:String+ market_price:Integer+ shop_price:Integer+ porpose:String
