Mi mandi il cell che la ringrazio

Codebue Fabio
P-Soft

Il giorno 18/gen/2013, alle ore 07:35, Josef Kokeš <j.kokes@...> ha scritto:

>> This raises a couple of questions:
>> 1) Are there any adverse conflicts between IB6.5 and Firebird in a
>> situation like this ... i.e., would running AT against an IB6.5 engine
>> ultimately damage the data?
>
> I had some significant issues if I used FB to access an IB database
> file. It was imperative to backup the IB database and restore it as FB
> database. This might or might not be an issue for you if you distribute
> a prepared database file (with all tables, procedures, triggers etc.
> created); if you instead create the database file from scratch, then you
> should be OK.
>
> Also, some statements behave differently under IB and FB (e.g. raise an
> error in one and work normally in the other - some CASTs, I think, and
> perhaps AS used in certain situations).
>
>> 2) Is there some way we can determine at startup time whether there is a
>> Firbird engine running or an IB engine? We might want to ensure that AT
>> is running in an environment served by Firebird only.
>
> It is definitely possible to detect a version of Firebird by querying
> various system tables (e.g. if RDB$GENERATORS has a RDB$DESCRIPTION
> field, then the database is at least FB 2.0). I suppose you could do the
> same for IB (check whether a field or table exists, which only exists in
> one of the engines).
>
> Josef
>
>
>
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