The <Stamptype> concept was a great idea!
On a create, the last updated values are not set.
This assumes that you must have 2 seperate stamps on
your entity. One for created and one for last updated.
However, if a record is created by user A then modified
by user B and then modified by user C, there will be no
record of the fact that user B made a modification
Obviously I need to keep history of all my changes
So, how about setting lastupdatedDateTime to the
appropriate values on create and update so that I can
use this value on a create and an update and maintain
my own history.