HB> TIBODataset has two column layers: one the VCL's persistent fields and the
HB> other the TIB_Columns of the InternalDataset. The trick is: Don't use
HB> persistent fields!

Helen, regarding Tdataset persistent fields, when you do not explicit
define them (in desgin time) they are created automaticly by Delphi in
runtime, so you ALWAYS have persistent fields floating around when you
use Tdataset. Anyway, I really don't think this is the reason for the
bad performance. I use TIBO* component in 95% of my projects and they
are really fast ;)

[]s

Carlos
WarmBoot Informatica - http://www.warmboot.com.br
FireBase - http://www.FireBase.com.br (Firebird/Interbase HQ)