To perform query operations, we need to add in some data. You can add as many documents as you want but, for the sake of example, I am going to add two nested JSON documents.

The first document is shown in the following code:

{ 
  "id": "100", 
  "lastName": "Doe", 
  "parents": [ 
     { "firstName": "John" }, 
     { "firstName": "Mary"} 
  ], 
  "children": [ 
     { 
         "firstName": "Emily",  
         "gender": "female",  
         "grade": 5, 
         "pets": [{ "givenName": "Fluffy" }] 
     } 
  ], 
  "address": { "state": "WA", "county": "King", "city": "seattle" }, 
  "creationDate": 1431620472, 
  "isRegistered": true 
} 

Here is the second document, with a few more changes:

{
   "id": "200",
   "parents": [
       { "familyName": "Wakefield", "givenName": "Robin" },
       { "familyName": "Miller", "givenName": "Ben" }
   ],
   "children": [
       {
         "familyName": "Merriam", 
         "givenName": "Jesse", 
         "gender": "female", "grade": 1,
         "pets": [
             { "givenName": "Goofy" },
             { "givenName": "Shadow" }
         ]
       },
       { 
         "familyName": "Miller", 
          "givenName": "Lisa", 
          "gender": "female", 
          "grade": 8 }
   ],
   "address": { "state": "NY", "county": "Manhattan", "city": "NY" },
   "creationDate": 1431620462,
   "isRegistered": false
 }

To create these documents using Azure portal, perform these steps.

1. Log in to your Azure portal and click on the Azure Cosmos DB option on the left side of the option bar.
2. Go to Data Explorer from the left menu and select the collection we created in the last chapter.
3. Click on the New Document button and add the JSON mentioned above.

Once the documents are created, we can query them.