We have just posted a new version of the Architecture Made Simple material (http://www.psdn.com/library/entry.jspa?externalID=2462&categoryID=230). The updated version contains two new chapters:
The first one introduces ProDataSets, and step by step changes the examples to take advantage of ProDataSets when reading data, tracking changes and saving data back to the database.
The second new chapter discusses object oriented extensions to ABL, and demonstrates how to implement some of the sample components as classes.
No prior experience with ProDataSets or OO is required. As always, post any comments in this thread!