【数据库课程设计】

建表

create table Admin(
ID int primary key,
Name varchar(20) not null,
Telnum varchar(11) not null,
Email varchar(20) not null
Remark text);

create table Commodity(
ID int primary key,
Name varchar(20) not null,
Number int not null,
Class varchar(20) not null,
Remark text);

create table User(
ID int primary key,
Name varchar(20) not null,
Telnum varchar(20) not null,
Email varchar(20) not null,
Address varchar(20) not null，
Class int not null,
Remark text);

create table Order(
ID int primary key,
Ordersid int not null,
Itemid int not null,
Number int not null,
Time datetime not null,
Money int not null,
Remark text);
foreign key(Ordersid) references User(ID),
foreign key(Itemid) references Commodity(ID),
Remark text);

create table ClinkM(
ID int primary key,
Commodityid int not null,
Ownerid int not null,
foreign key(Commodityid) references Commodity(ID),
foreign key(Ownerid) references User(ID),
Remark text);

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