How to refresh map/map marker every second like AJAX

How can I refresh or update a map every second. I know in my website I use AJAX and I can update the map this way. Is there any similar way to do this in Corona? I am trying to use a map to real time track a vehicle. I am getting the GPS co-ordinates from a MySQL database which is also updated every second. Is there a way just to change map marker if the data in the database table changes. Any help or pionters would be greatly appreciated Thanks 

use network.request() to simulate AJAX

use network.request() to simulate AJAX