title: iOS: How can I create a backup copy of my core data base? And how to export/import that copy?
body: <p>I want to offer the users of my app the possibility to create a backup of the core data database, especially in case he switches to a new device etc.</p>
  
  <p>How would I do that? Especially how can I reimport that file? I mean let's say he makes a backup copy of the database, then changes a ton of stuff and wants to reset to the previous saved backup copy. How would I do that?</p>
  
  <p>Thx!</p>