i suppose the advantage over a separate primary key / foreign key in
the child table is that it enforces a one-to-one mapping ?
On Mar 1, 2006, at 7:54 PM, Robert Leftwich wrote:
Michael Bayer wrote:
just curious, why would a primary key column want to be a foreign
key as well ? seems a little denormalized to me.
Composite/bridge entities in m:n relationships.
Robert
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