Linux
If you are interested in an heterogeneous environment running VDF applications on Windows clients (what else) and sharing the same database with Dataflex 3.1 programs in Linux running in a Linux server then here is some stuff presented at Educ2004
Zip File with source code and the presentation done at Educ http://www.moose-software.com/Include/ElectosFileStreaming.asp?FileId=32
Case Study http://www.moose-software.com/Include/ElectosFileStreaming.asp?FileId=31
Pepe Guimarães