这段语言有错吗?

0100

我是新手.这段语言不知道为什么会出错.

1. 
   
2. create table learn(stunum int,counum int,score,int,
   
3. contstraint c1 check(score between 0 and 100),
   
4. contstraint c2 primary key(stunum,counum),
   
5. contstraint c3 foreign key(stunum) references student(number),
   
6. contstraint c4 foreign key(counum) references cource(number)
   
7. );
   
8. 
   

复制代码

提示在contstraint c2 primary key(stunum,counum)这一句出错.An error in your sql syntax.位置是near 'constraint c2 primary key(counum)'.

hantsy

什么数据库呀