The tiles don’t expand, though. Wood does. So perhaps the wood needs to be trimmed back a quarter centimeter.

This is a fallacious. If you have a very small set of users, what exact data is in the database that you would be upset at losing? Maybe your contacts and your calendar. Which you could back up manually, which might actually be simpler than backing up the database.

Well that’s kind of misleading, right? If they didn’t set one up, then it’s probably SQLite. But if they did set one up, that was years ago, and who cares what it is, if it’s working.