title: Elasticsearch to index RDBMS data
body: <p>These are three simple questions which was surprisingly hard to find definite answers. </p>
  
  <ol>
  <li>Does ElasticSearch support indexing data in RDBMS tables ( Oracle/SQLServer/Informix) out of the box?</li>
  <li>If yes, can you please point me to documentation on how to do it</li>
  <li>If not, what are alternate ways (plugins like Rivers - deprecated) with good reputation</li>
  </ol>