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>>According to a survey Microsoft did, 50% of VFP developers use SQL Server.
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>And that depends. In all the apps I've done in the last four years, four have used SQL server, one is in the migration process, and one uses MySQL for some tracking - the rest (in that app and elsewhere) is just plain old DBFs. And I don't know how to count them, because some overlap partly, some had a dbf version running in parallel, one used SQL only on the side while the main work was in dbfs etc etc. The border is murky.
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>I figure "50% of VFP developers have used SQL server at least for one app" would be a more correct interpretation of the poll result.

I agree. No one should stretch that to mean that 50% of VFP apps use SQL Server, or that more than a small percentage use SQL Server exclusively. I think it means that 50% of the surveyed developers use SQL Server in some form or fashion, or inversely, 50% don't use it at all. Still, I think MS could correctly conclude that better compatibility and integration with SQL Server is important to many VFP developers, and I like the improvements they've made (and continue to make) in that regard.