Hi Forum,

Many thanks for all the answers. I will go in the path of using the
primary kay approach, sure it will work ... but it has less
abstraction, as I have to know things about the source table.

BTW ... besides me, is there any other guy in the world trying to buil
a big project that can trully work fine with the more than one sql
engine, without changing code??. <G>. (In my case, 4 engines will be
fine).

Best regards,

Dany