Persistent fields are just as fast as accessing fields from the Fields[]
array by number. Faster, actually. Use them for all your RAD GUI application
development. That's just fine an dandy.

When writing non-interactive data handling routines you want as
simple/native of interface as possible. The whole TDataset layer maps into
the native IBO layer so it is faster simply using the native IBO layer
directly.


Regards,
Jason Wharton