Helen,

> create table "Empleado" ( /* forces exact case, but double quotes are not needed when referring to it */

it seems to me that the double quotes are always needed once you use
them in the definition. In this case, if I try

select * from Empleado

then ISQL complains that EMPLEADO is not a valid table name...

whereas

select * from "Empleado"

works well.
As designed, if I remember well.
Ciao
--
____
_/\/ando