sorry to disturb,

I like to know if is possible to fewer the file fragmentation of a gdb db.

Example: imagine a volume where we have both a gdb that is enlarging and a
log file that's enlarging too.

Actually I manage log files in win32 with memory mapped files and creating
big chunks of data at time (1-50mbytes at once due to the hypothetical log
file final size), so to avoid many little chunks potentially fragmented.

it's possible to the same thing with firebird?

For example: can firebird manage database in files that are "enlarging" 50Mb
at once?
Or prebuild tables of 0.5GB?

Or similar behavior?

Very thanks to who help me (sorry for my bad english)

Kind regards,
Roberto