If you need a database backend quickly and inexpensive, like in a hackathon, there’s a simple way to create one.
Db2 on IBM Cloud has a free tier of 200 MB, that should be enough for those use cases. I used an existing repo & instructions, added some lines of code, omitted the chatbot piece (Watson Assistant service and Slack integration) and voila! I had my database backend.
You can find the new repo here .