Hi @pszmidt! Unfortunately the DATABASE_URL string contains the credentials to access your database, so it would be wise to change it before you put any data into it!
I don’t have a guide at my fingertips for changing that, but this looks relevant: Error trying to (re)attach a database: "app already contains a secret named DATABASE_URL"
Fly Postgres · Fly Docs These docs should also help you get your app talking to Postgres, especially this doc