If I am using time as milliseconds since epoch and not doing any special
queries with it, is there any advantage to using a TIMESTAMP field over
a NUMERIC(18,0) field? My object stores the value as a long (from
System.currentTimeMillis()) and it seems a bit of a drag to constantly
create Timestamp instances from that long when saving or call .getTime()
on the timestamp object when loading. Thoughts?

Robert