On Sat, Feb 22, 2020 at 10:52 AM John Cowan <xxxxxx@ccil.org> wrote:

I'd go with SQLite itself.  High efficiency is not needed; certainly there will not be a high frequency of updates.  It is robust, reliable, and well-maintained. 

Until we know that the database is going to be particularly large, we could just stick with a file in S-expression syntax rather than a database. I wouldn't be surprised if we could get to a few tens of megabytes before we had to do more.