 <p>SQLite database file is just a normal file, you do not need any special steps to update it. </p> <p>Get the file path or URL to the SQLite file , and use <code>NSFileManager</code>'s method <code>removeItemAtPath:error:</code> or <code>removeItemAtURL:error:</code></p> <p>Then create the new database the same way you created the old one.</p> <p>Also check this <a href="http://www.musicalgeometry.com/?p=1736" rel="nofollow">link</a> if get any problem.</p> <p><strong>EDIT :</strong> You can delete your old <code>SQlite</code> database file if it's copied in document directory. You CAN NOT delete files from bundle.</p>