I have found a problem with TIBOTable and TIBOQuery if pessimisticLocking
are set.
I have some trigger for trace all the operation on my tables (like
IBO$DMLCACHE in Survey Application) if PessimisticLocking is true and one
record is Edited then i see the trigger called 2 times (like 2 Edit/Post on
the same record). If pessimisticLocking are false all work fine and only one
update are triggered.

Insert and Delete operation work fine alwais.

Regards,
Enrico Raviglione.