user
username:StringuserID:charPassword:StringEmail:StringUserTel:Stringcredit:floatRagtime:data
n
shopping cart
dishid:()orderid:()amount:()
setdishid()setorderid()setamount()getdishid()getcosname()getamount()
0..n
1
oder
orderID:()username:()address:()tel:()email:()pay:()orderDate:()Bz:()enfore:()
setorderIDsetusernamesetaddresssettelsetemailsetpaysetOrderDatesetBzsetenforegetorderIDgetusernamegetaddressgettelgetemailgetpaygetOrderDategetBzgetenfore
dish
dishid:()dishname:()type:()introduce:()price:()
setdishid()setdishname()settype()setintroduce()setprice()getdishid()getdishname()gettype()getintroduce()getprice()
manager
id:()manager:()pwd:()
setid()setmanager()setpwd()getid()getmanager()getpwd()
