FK can be on unique columns, not just PK columns.... and you would not
be allowed to add a row in the child table with a value not in the
parent table unless the child row had a null in it
- "Grabowy, Chris" <cgrabowy_at_fcg.com> wrote:
> We have a designer that is adding a FK on two columns from one table
> to
> another. These two columns are not in the parent table's primary
> key.
>
> So we are kind of scratching our heads wondering if you can, from a
> proper
> design point of view, create such a FK? It appears that if you
> update one
> of the two columns in the child table then you would need to create a
> new
> record in the parent table.
>
> Thoughts??
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Grabowy, Chris
> INET: cgrabowy_at_fcg.com
>
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Received on Fri May 31 2002 - 11:48:31 CDT
