title: Android updating database differentially
body: <p>HI All,</p>
  
  <p>I am developing an application which would  need to regularlay update the database from the server. I am planning to get the database from server in json format. </p>
  
  <p>But I want to update the data for those records which have been updated on the server. I do not want to download the complete database but only the differential database so that data transfer is minimum each time.</p>
  
  <p>What is the best way to achieve this? Any sample code available?</p>
  
  <p>Rgds,
  Sapan</p>