How do you get view bindings to update a derived collection class?

Question

I'm really lost here. In one sense I understand how bindings work, it's just that they never seem to work as I expect
In a pretty simple scenario, I have a table view displaying the contents of a derived set. This contents of this set is based on certain selections in the same view. If it helps to know, the items of the set are related to each other, and when one is selected the contents will change just to include the "direct relations".
Currently the view is showing the complete set, but when an item is selected, I can force console output showing the new filtered set, but the routine isn't being called automatically by the binding, and the view isn't altering (apart from the selection changing).
I've read the documentation over and over, and it seems that the solution is very convoluted and unnecessarily complex. So I can't help but think that I'm approaching it incorrectly.
I've read about using mutableSetValueForKey:, implementing collection accessor methods, and registering observers. But I'm simply wanting to connect a view object to a generated NSSet of strings in my single controller class. How hard can it be?
As I interpret the documentation, the option of registering as an observer involves calling methods and implementing methods. But we're talking about a view class in the NIB file, and I doubt I'm supposed to subclass that just to get it to update with changes.
Can someone point me in the right direction? I'm close to abandoning bindings and just sticking to the old fashioned table methods.
I'm using Xcode 4 on 10.6.7

Answer 1

Try this
DECLARE
run_date DATE := '10/12/2009';
BEGIN
execute imeediate 'create view view_name as select * from dual';
END