title: Querying TAFFYDB nested records
body: <p>I have created a data model using TAFFYDB. Some of the fields have nested records. I am facing difficulties querying and updating the nested records.</p>
  
  <p>For example:</p>
  
  <pre><code>var friends = TAFFY([
        {
          "id":1,
          "gender":"M",
          "first":"John",
          "last":"Smith",
          "city":"Seattle, WA",
          "comp": 
          [
            {
              "id":1,
              "audience":"cavern"
            },
            {
              "id":2,
              "audience":"cottage"
            }
          ]
        },
        {
          "id":2,
          "gender":"F",
          "first":"Basic",
          "last":"Smith",
          "city":"Seattle, WA",
          "comp": 
          [
            {
              "id":1,
              "audience":"bush"
            },
            {
              "id":2,
              "audience":"swamp"
            }
          ]
        }
  
      ]);
  </code></pre>
  
  <p>Supposing I need to update any of the <code>comp</code> field's <code>audience</code>, how will I go about it?</p>