> create table (...)
> (...)
> duration interval default 7
do you really think it's worth spending 12 bytes for your intervals?
i usually use either timestamps or integers for intervals.
btw, as i know default 7 would be 7 msecs :)
> hourDay timestamp with time zome
consider using it without a time zone maybe.
if you really mean time of a day use time [with time zone]
> (...)
>
>
> if i replace this two data types with varchar2(50) it works but i would
> like if there's a better choice
it seems oracle still has some probs with sql date/time data types...