title: Update local database from server in windos phone 7.1
body: <p>I'm working on push notification service on which i need to take data from server and store on local database in windows phone 7.1 and then retrieve that data from database to windows phone application. 
  I've tried almost all tutorial and previous question which is asked in stack overflow related to local database in windows phone 7.1 but I can't implement this task.</p>
  
  <p>I know, I should ask that problem which i faced in particular tutorial but I want to go from starting point again because ,may be my implementation process was wrong.</p>
  
  <p>So. please tell me any tutorial on which someone already implement this task or give me code to store the data from server to database and then retrieve the data from database to windows phone.
  I'm using C#.net. If anybody need any additional info please tell me. </p>