It depends on the programming language of your server, The Intel XDK library does not have direct interaction with the server, for example if you are using PHP in your server:
// file.php in your server
<?php
$conn = mysql_connect('localhost', 'user', 'password') or die('Could not connect: ' . mysql_error());
mysql_select_db('bd', $conn);
$sql = mysql_query("SELECT * from users");
echo json_encode($sql);
?>
and then in the XDK app:
intel.xdk.device.getRemoteData("http://yourserver.com/file.phpl", "GET","","success_handler","error_handler");
function success_handler (data) { alert("success: " + data); }
function error_handler(data) { alert("error: " + data); }
check this link: https://software.intel.com/es-es/node/493009
