Let's see the differences for a non-relational database using RethinkDB. If you don't have it, just install it by following the official documentation (https://www.rethinkdb.com/docs/). Let's just start the server:
This will start the server, which comes with a very nice administration console on port 8080. You can open it in the web browser:
Go to the Tables section on top to see the databases:
Create a database called imagini using the Add Database button. You should now have our database ready. You need nothing else here: ...