Kevin, thank you very much for taking time to answer my questions despite your busy schedule. I just have one more question, hoping you can help answer too.
From reading one of your articles at http://portal.dfpug.de/dFPUG/Dokumente/Konferenzen/VFP-Konferenz%202002/55_E-NET4.pdf, it seems to me that your architecture is contrasting that of Microsoft for example IBuySpy portal.
Your BusinessObject contains a table name, a field list, GetDataSet() methods so database access mechanism is contained within the business object itself. Microsoft has two sepate objects, a business object that calls a corresponding database object that accesses database for it. I would imagine that with a true n-tier architecture, business objects should not know any thing about the database (i, e. table name and query string). What are your thoughts on this?

Your help is much appreciated.
Tony Dam