title: Logstash Elasticsearch Parent child relationship
body: <p>I am new to Elasticsearch. I have following questions:</p>
  
  <ol>
  <li><p>Suppose, I have 3 tables in relation database:</p>
  
  <p><code>master</code> (contains item_id &amp; location_id)</p>
  
  <p><code>Location</code> (location_id and description)</p>
  
  <p><code>Item_master</code> (item_id &amp; description)</p>
  
  <p><code>Location</code> and <code>Item_master</code> are parents and clearly <code>master</code> is a child.
  Can a child have two parents in Elasticsearch?</p>
  
  <p>If not, what is the workaround to show <em>parent child</em> in this case?</p></li>
  <li><p>I am using <em>logstash</em> to feed data into Elasticsearch. What filter configuration do I use in <em>logstash</em> to get <em>parent child relationship</em>?</p></li>
  </ol>