Claude,
While Rod did not openly say it, his example works with either the DBC or SQL Server. He has a library class with a simple flag to use one or the other. Again, while this demo is basic, it's a nice example of fundamentals to show people new to the technology how to do things.
Yes, some of the people on the VFP forum are interested in using both VFP code and .NET code...and some are in situations where a complete re-write to .NET is being done.
Kevin