I see... mmm... I would add a foreign key...
Every time I have tried to model this kind of relationship without a
foreign key it ends up being problematic. I don't recall the details
much though.
On Aug 7, 2009, at 11:00 AM, Francesco Romano wrote:
But it's the primary key of Cart...
Francesco
On 07/ago/09, at 16:29, Ricardo J. Parada wrote:
On Aug 7, 2009, at 4:09 AM, Francesco Romano wrote:
The relationship order is optional but the attribute id does not
allow nulls.
I think you need to make the foreign key 'id' in cart optional so
that it can take a null when the order relationship is null.
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