title: ORMLite update of the database
body: <p>I'm actually developing an app which is using ORMLite library (which is wonderful btw) but I'm a beginner using it.</p>
  
  <p>I have a question about the update of the database inside the device.</p>
  
  <p>Let's say that someone download my app on the Google Play. Few months later I will certainly populate some tables with new entries. </p>
  
  <p>When this person is doing an update of the app, how can I just update the database with my new entries and keep the old ones inside it.</p>
  
  <p>To be more clear, imagine that the user answered questions in my app. When I will introduce new questions, how can I insert them in the db when he updates my app <strong>and keep the questions</strong> that have already been answered ?</p>