title: iOS, which database to choose?
body: <p>i need some advice.</p>
  
  <p>I am developing an iPhone application (later for Android also) using some social network users. I need to store some data in a database online.</p>
  
  <p>Better to use MySQL with XML or directly use SQLite?
  I want performance and stability, and if all goes as I think I might have to handle 500,000 users or more.</p>
  
  <p>I studied a lot about databases, but I would not even take care of his administration, because I'm alone.
  Most web services do not support SQLite, but MySQL only.</p>
  
  <p>Can anyone give me some advice with justified?</p>
  
  <p>Thank you to entire community.
  Bye, Eros.</p>