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create table student

(

　　id int identity(1,1) primary key not mull,

　　name varchar(20) not null,

　　sex char(2) not default '男'，

　　cardNo varchar(18) not null check(len(cardNo)=15 or len(carNo)=18),

　　class varchar(20) not null,

　　teacher varchar(29) not null,

 　　inDate date not null default getdate()

)

create table score

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(

　　id int identity(1,1)not null primary key,

　　math float not null,

　　chinese float not null,

　　english float not  null,

　　schoolyear char(3) not null,

　　studentId int foreign key references student(id) not null

)

insert into student values("张三"，DEFAULT，‘49494809834’,'s34435543','ifjgn','2008-03-04')

insert into student values("李三"，DEFAULT，‘49494809834’,'s34425643','龙老师','2009-06-04')

insert into student values("法三"，DEFAULT，‘13455455554’,'s34415043','蓝老师','2007-03-04')

insert into student values("分三"，DEFAULT，‘19494809834’,'s34465943','费老师','2008-08-04')

insert into student values("饿三"，DEFAULT，‘29494809834’,'s34475743','帝老师','2006-03-04')