Antonio,

> Do you kwnow how many relations suport a
> FirebirdRC2/Interbase6.x table?

"relation" is really a synonim for "table" in RDBMS jargon. In case you
want to know how many referential constraints a table can have, I don't
think a maximum is specified, but have a look at page 25 of the Op.
Guide (IB6 beta docs) for all the published limitations. Please keep in
mind that, as is the case with all software, often you reach a point of
unusability well before the theoretical limit is met.
Ciao
--
____
_/\/ando