Hey, author here! Thanks for the feedback! I went back and forth with having `data` being a JSONB field or VARCHAR, but ended up with VARCHAR to show that `node

Hey, author here! Thanks for the feedback! I went back and forth with having `data` being a JSONB field or VARCHAR, but ended up with VARCHAR to show that `nodes` don't have to be anything crazy. Really `nodes` is just a standard table you'd see in any old SQL database, and what makes it a "graph" is the `edges`/relationship table.