I was fooled with the logo, and the name that just looks like Thunderbird and so on ... Not a good day ...
So, right, this is the good DB product : Firebirdsql, as you talk about.
(perhaps can you change the topic title)
Our need is just an extract and I suppose that a technology for this kind of DB needs to update Stambia Designer to a next version.
So, as far as i'm concerned, it's not a critical improvement, but it would be nice to consider it.
Meanwhile, we will deal with standard command line extract.