[paren]

fijate que ya cheque bien la ayuda de interbase, y encontre esto:

Código Delphi [-]
 The following procedure illustrates how to apply a dataset’s 
 cached updates to a database in response to a button click:
 
 procedure TForm1.ApplyButtonClick(Sender: TObject);
 begin
   with CustomerQuery do
   begin
   IBDatabase1.Open;
   IBTransaction1.StartTransaction;
   Table1.Insert;
   Table1.FieldByName('QUANTITY').AsInteger := StrToIn(Edit1.Text);
   Table1.Post;
   IBTransaction1.Commit;
   end;
 end;
 
 In the above example, you could substitute Rollback or RollbackRetaining
 (an InterBase 6 feature) for Commit.

Es a lo que te referias verdad?
lo voy a probar a ver si así me funciona
gracias