Hi Tarek,
Well, I have a split view controller. When I select an item from the master list on the left, the detail view is updated. The master list displays 2 fields from the detail view for every record. If I update one of those fields in the detail view, I want the field to be updated in the list on the left. Also, if I delete the record from the detail view, I'd like the master list on the left to also show the row as being deleted. The items on the right in the detail view can be updated in a bunch of different ways, such as with a UITextField or even a popup modal window editing the value. In that scenario it's possible that the value on the detail screen on the right needs updating as well as the entry in the master list on the left. The detail view consists of a UITableView as well as the master list on the left.
That's pretty much it.
Thanks,
Brendan