Classification
PK id
cname parent_idtype
User
addr email name password phoneusername
1/1
Order
addr name order_time phone state total user_id
Car
count u_id product_id sub_total
Amind_user
passwordusername
Order_Item
count order_id product_id sub_total
1/n
Product
csiddescimage is_hot market_price pdate shop_price title
