>Can you tell me how the DBF evolved since the days of FoxPro 1.0 till VFP 7? (what new features, enhancements, improvements, reliabiblity issues, capacities etc, in the DBF itself and in those statements/functions to access it)

If you look a step above teh DBF and look at the VFP cursor engine itself, you might want to include enhancments like buffering and transactions.