```
1. City.json (json-file) 

    {
      "id": "1",
      "name": "Bombuflat",
      "state_id": "1"
    },
    {
      "id": "2",
      "name": "Garacharma",
      "state_id": "1"
    },
    {
      "id": "3",
      "name": "Port Blair",
      "state_id": "1"
    }

```

How to store the above json data of cities (only once) into mongoDB using nodeJs and mongoose