> > Hello, > I am encountering one problem. I am using mysql as > the > dabase for my application. > I create a table like takeexam as following:create > table takelabexam( sid varchar(10) not null, > cid varchar(20) not null, > marks integer > foreign key (cid) references course on Update > cascade , > primary key (sid, cid,labsection,year)); > > cid in takelabexam references cid in table courses. > so if i update the cid in courses table. the records > in table takelabexam which references to courses > should be updated automatically. but it doesn't > work. > Could any one can help me out. i will appreciate > very > much > bin > > > >
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