Yes, those certainly could be as you say. Again, though - I need to get at the data in its proper form, understanding what goes with what. Simply extracting some number or text data can give a clue about contents, but is not useful for anything definite.
I'm surprised nobody recognizes the internal format, and I wish ALL database file had something like that in their header - name of the DB engine as a bare minimum. This is frustrating, and of course, it's entirely possible that somebody made their own data storage file and did not use any commercial engine. I did a few that way, back in the bad old days. I don't envy anyone trying to decode what I did, if they run across a similar legacy situation from my early work.