Well, Jonathan...

> Thanks a lot for the explanation. This shouldn't be much of a problem as
> I avoid such queries anyway, and even in Interbase, even though there's
> no error message, this leads to bugs, so...

The problem is that you have no way other than your eyes to check this.
When the error message appears in Firebird, I really had some querys to
check. :-)

Martjin remind you about other detail: some new keywords. If you used some
of them in your metadata, this will give you work to change them. But, as
well, you will get an error message from the server.

> The main reason this is a problem for me is that I have a lot of
> databases from a lot of different customers, and it's a hassle to have
> to backup restore them all (on my development machine), just because I
> changed one of my customers to FB 1.0.

You don't need to backup/restore, but it's safer. Why don't you do this each
time you upgrade your customer software. The hard part will be upgrade the
client in customer's workstations, if you don't prepared yourself to this.

> >The biggest hassle I found (I develop in Delphi 5) was that the IBX
> >components with Delphi had hassles with FB - although I must admit that I
> >didn't do very much playing around with this aspect of the changeover.

(I'm not are of this problems with IBX and Firebird 1. I know a lot of
people that are working with IBX without any problem, but I can not speak
for myself, since I never used it)

> That part doesn't worry me at all, as I'm already using FIBPlus.

I think that a small test using your application will remove your doubts.

Artur