title: Does Thingsboard store telemetry data into database by default?
body: <p>I'm studying the ThingsBoard IoT platform and what's not clear to me is:</p>
  
  <p>does ThingsBoard store <strong>by default</strong> its telemetry data into the configured database (Postgres or Cassandra) ?</p>
  
  <p>I can also put the question in another way: when I view telemetry data from device's dashboard, where do those data come from?</p>
  
  <p><br></p>
  
  <p>What I understood is that the <strong>default</strong> data flow is:</p>
  
  <p>device > transport layer (mqtt, http) > Kafka</p>
  
  <p>so I think you must create an appropriate rule into the rule engine if you want to further save your telemetry data into your database, but I'm not sure about this, please correct me if i'm wrong.</p>
  
  <p>Thank you all</p>