> > Using the DB_KEY provides a significantly measurable difference, IME.
>
> How exactly can I use DB_KEY ?

AS
DECLARE VARIABLE AKEY CHAR(8);
BEGIN
...
FOR SELECT RDB$DB_KEY
....
INTO :AKEY DO
...
UPDATE ...
WHERE RDB$DB_KEY = :AKEY;
...
END


HTH,
Jason Wharton
CPS - Mesa AZ
http://www.ibobjects.com