db.json

{
  "users": [
    {
      "id": "101",
      "firstName": "Sany",
      "age": 26,
      "companyId": "201"
    },
    {
      "id": "102",
      "firstName": "Mahadi",
      "age": 26,
      "companyId": "201"
    },
    {
      "id": "103",
      "firstName": "Mongo",
      "age": 26,
      "companyId": "401"
    },
    {
      "id": "104",
      "firstName": "Graphql",
      "age": 26,
      "companyId": "301"
    },
    {
      "id": "B1OfYXyYb",
      "age": 45,
      "firstName": "Jonty",
      "companyId": "301"
    }
  ],
  "companies": [
    {
      "id": "201",
      "description": "Apple Inc, mountain view, california",
      "name": "Apple"
    },
    {
      "id": "301",
      "description": "Google Inc, mountain view, california",
      "name": "Google"
    },
    {
      "id": "401",
      "description": "Microsoft Inc, mountain view, california",
      "name": "Microsoft"
    },
    {
      "name": "W3Engineers Ltd.",
      "description": "A software company in Khulna, Bangladesh",
      "id": "rk3OnzltW"
    },
    {
      "id": "HJQa3MeF-",
      "name": "Telenor Bangladesh Ltd.",
      "description": "A software company in Dhaka, Bangladesh"
    }
  ]
}