In order to establish the connection to MongoDB Atlas, you'll need to

1. Go to: https://www.mongodb.com/ and open an account and create a cluster

2. In your project's root level, create a json file named nodemon.json.

   The contents of this file should be:

      {
          "env": {
           "mongoDatabase": "add_your_db_name" ,
           "mongoUserName": "add_your_username",
           "mongoUserPassword": "add_db_password"
   
         }
   
       }
   

The nodemon.json file will contain your mongodb credentials.