title: How to update GTFS static data stored locally
body: <p>How should the regular updates to the GTFS static data provided by the Agencies through their text files be handled?</p>
  
  <p>Should all this static data be deleted from the data stores and then completely reloaded from the Agency's new GTFS text files ?<br>
  T
  his method would be used if the identifiers of say Route_id, Trip_id or stop_id can be reassigned between updates.</p>
  
  <p>For example the new GTFS data files show that Stop_id "x" which was assigned to Trip "Y" is now assigned to Trip "Z". </p>
  
  <p>If these entity identifiers are never reassigned then the new GTFS files need to be compared to the local data and based on the results; records need to be removed, updated or added to each table.</p>
  
  <p>Erick.</p>