Service for creating a simple database?

Question

JavaScript

Hello. You just need to write a js application with a demonstration of how fetch works. You need to create a database and use forms in the application to do GET, POST, PUT, to create, receive, update data. Is there any simple service?

Answer 1

Here you can even do without creating a database, just work with cloud-based NoSQL storage in the REST style:
https://firebase.google.com/

Answer 2

1 - You set yourself any database and fill it with any data. For simplicity, you can take MongoDB
2 - Google the manual and write a simple backend in Node in an hour.
3 - At the front, you send requests for the routes you wrote to the backend
Or you can try some GraphQL