11. The device of claim 10 wherein said instantiation of said object-oriented code for refreshing said user interface screen comprises instantiating a first instance of said object-oriented class and setting data members of said first instance based on attributes of the markup language element representing said refreshing of said user interface screen, and wherein said instantiation of said object-oriented code for refreshing said database query comprises instantiating a second instance of said object-oriented class and setting said data members of said second instance based on attributes of the markup language element representing said refreshing of said database query.
10. The device of claim 9 wherein both of said object-oriented code for refreshing said database query and said object-oriented code for refreshing said user interface screen are defined within a single object-oriented class.