I am developing a app that retrieves a list of Airports from a remote MySQL database and list them in a Ext.List When the user taps the disclose button it will reveal more information about the airport.

My initial setup was just to retrieve the whole database into a store but the problem is that the database size is 6.6MB and this is a problem bandwidth and time wise. I thought that I could retrieve only the id and airport name for the list and then tapping on the disclose button will initiate a new store and retrieval for the MySQL database based on the id of the airport.

QUESTION:
  1. Is this possible?
  2. Is there an example that I can follow to see how this is done?
Thanks for the response in advance.