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[Almost SOLVED] Re: One-to-one relationship

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[Almost SOLVED] Re: One-to-one relationship

Subject: [Almost SOLVED] Re: One-to-one relationship
From: Francesco Romano <email@hidden>
Date: Mon, 8 Dec 2008 18:13:24 +0100

I don't know why.... I remove the "thick" Owns destination and propagate key, re-assign it and now it works.

The only thing is I had to "allow null" on the attribute "Qta Iniziale" on the entity ProdottoPrivato..

It's not the "Theorical" way to map a ER to tables... but... I think it can be OK..

Thanks to everybody

Francesco.


On 07/dic/08, at 17:36, Francesco Romano wrote:

Maybe I made something wrong...
This is my "last" version of the model:
Entity Prodotto
<Picture 1.png>
Entity ProdottoPrivato
<Picture 2.png>
Prodotto owns and propagate key to prodottoprivato.
The problem is... Prodotto needs ProdottoPrivato and prodottoPrivato needs prodotto.. So I created a "loop"..

ProdottoPrivato and Prodotto have a 1-to-1 relation I can't create a Prodottoprivato without a Prodotto, but I want to do the inverse. The PK of prodottoPrivato is the PK of Prodotto.
I don't know how to manage this..
Francesco


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  >Re: One-to-one relationship (From: Francesco Romano <email@hidden>)




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