In this recipe, you will see how to define a schema and perform CRUD operation on the database collection. First, ensure that you have MongoDB installed and it's running. As an alternative, if you prefer, a MongoDB DBaaS (Database as a Service) instance in the cloud will also do. Before you start, create a new package.json file with the following code:

      { 
        "dependencies": { 
          "mongoose": "5.0.11" 
       } 
     } 

Then, install the dependencies by opening a Terminal and running this code:

      npm install