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sqlite DB + data file - write out all entries
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Probably - Depending on what "accompanying binary datafile" actually means.

Could you be more specific? Perhaps upload the DB file somewhere so we can see the format tell you how to write it out?

If you do not wish to upload it - What OS do you use? If Linux then "DB Browser for SQLite" would probably make it easy, if Windows you can try SQLiteSpeed.com or just google "sqlite db admin" or such.
Another option is dumping from the CLI and sending us the schema.

Whichever you choose, we need a lot more knowledge about the DB schema and how you want to see it to form useful queries to "write it out".