foreign key

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foreign key

Post by chintu » Wed Oct 24, 2007 8:59 pm


Iam a beginner.Can anybody explain me about the foreign key i.e.

when we use references what is on delete set null

and what is on delete restrict

thanks in advance .

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Post by DavidatK » Thu Oct 25, 2007 2:05 am


Not sure exactly what your question is, but check out the link below and see if this answers it.

Delete Set Null

If this does not answer your question, please come back


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Post by immanuel » Wed Jun 18, 2008 1:42 pm

actually , other than primary key u should select another key which is the primary key for next table. that other key of first table is referred as foreign key


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