Ah understood. In that case, I'll echo the comments below - I would choose SQLite to preserve data relationships with automated dumps to plain text (maybe JSON?

Ah understood. In that case, I'll echo the comments below - I would choose SQLite to preserve data relationships with automated dumps to plain text (maybe JSON? Something parseable, anyway), since I can't imagine utf8-encoded text going obselete to the point where no programs exist that can read in the foreseeable future.