Firebird didn't exist in the 1990s, so if it is from that time period,
it is unlikely to be a Firebird database. It could be an InterBase
database, but then I'd still have expected gstat/Firebird to produce a
non-zero ODS (and then, having an extension FDB doesn't make much sense).
Looking at the first few bytes of the file, it is not a Firebird or
Given it seems to reference images (and based on
), it could be "Extensis Portfolio",
an image organization program, which has, in one form or another,
existed since the early '90s.