After a few minutes of searching it turns out that they are not in
the VAULT directory, but in the DOCVAULT directory, and that
directory is password protected.

Could you consider posting your files to a system that is not
restricted to members only, such as comp.lang.ada or this mailgroup
or some public web page?

Your e-mail summary of your preliminary proposal in message number 2
addresses only one level deep objects that are equivalent to simple

What happens with nested sets, lists of lists of stacks of records,
etc.? How do you replace one piece of one of the records in a list
of lists of stacks of records without copying the whole record? If
all the intermediate record types have this waste, does that mean
that to use your proposal we must break all structures containing
records into parallel structures containing each only one of the
record's components? I guess we shall have to wait until we can gain
access to your two documents to find out. Stay tuned to this email
list for further instructions on accessing these two documents.