create table tSId

(

   tSid int identity(1,1) primary key,

   tSName varchar(10) check(len(tSName)>2),

   tSGender char(2) default('男'),

   tSAddress varchar(50) null,

   tSPhone char(11) null,

   tSAge int chect(tSAge>18 and tSAge<60),

   tSBirthay date not null,

   tSCardld varchar(18) not null,

   tClassId int foreign key references TblClass(TClassId)

)

insert into Users(UserName,UserPwd) values('ccc',123456)