Re: use triggers to enforce interigity

Hi,
Do all of you think that I don't do my homework? Below I attach it, which I am almost done. Only one thing is when

update course
set course#='cs123'
where course#='cs457';

I got errors because tiggers to check parent tables. So I think I got in a wrong direction and come here, but...

Jingyan Xu

I posted several times the attach file but it failed. so I copy it below: Received on Tue Nov 30 1999 - 00:20:58 CST