It turns out that people more qualified than I are working on the link between databases and category theory.
While perusing through my backlog of unread posts from Edward Z. Yang, I came across this interesting post from 2010 (I’m pretty far behind!). Some of the links from the post are dead, so I’ll amend that here:
In 2010, David Spivak gave a tech talk entitled Databases are Categories at Galois. The slides are more digestible than the paper.