I don't known the full story as I just got involved recently but I have a file that is "a MySQL data base" (longish story, the source is not technical).
The file name is: something.db
the Linux file
command just gives data
looking inside I find Copyright (c)2000 9.0.0.1108
Sybase
(might be an author or file format vendor)
I'm supposed to be striping the data out of the file but first I need to known what type it is.