Re: Is a primary key made of a couple columns so much better than a unique() constraint ?

> In PostgreSQL, both primary keys and UNIQUE constraints are implemented
> via UNIQUE indexes, ergo there is no difference...

Thanks Martijn, it's exactly what i wanted to know.

Best regards,
David

--
David Pradier -- Directeur Technique de Clarisys Informatique -- Chef de projet logiciels libres / open-source