Have a look at the wiki page about the new history system:
http://wiki.dspace.org/index.php/HistorySystemPrototype

It's already written, and in fact the project is over so I won't be
doing any more work on it.  If the Event patch gets adopted, it will
remove the old history system, but open the way to let sites install
this one as an add-on.  Right now it only exists in the wiki and on the
patch queue.

The old history system wrote some very dodgy records; some outright errors,
other records that cannot be correlated to actual events, and it used
database IDs as identifiers instead of anything persistent.  (iirc, one of its
worst sins was using Handle-like identifiers with database-IDs in the suffix).
So, if you're actually going to use the data you're better off with the new
system.  It also includes an RDF database (Sesame2) so you can make
custom queries, which sounds like it would help your use case.

    -- Larry

> I am not currently using it, but bringing it up is timely because I'm
> reaching a point where what I am being drawn towards is the necessity of
> an audit tool for certain system activities.  I haven't had time to
> evaluate what the history system can do for me in that regard, but if
> anyone is planning on making changes to it, I'd be interested in being
> involved in some way, shape, or form.
>
> Let me give you one or two examples of the kind of auditing that I need:
> as users add/remove files over time from their item as they prepare it,
> I need to track what was added/removed and by whom when (multiple users
> can work on a single item in our system).  Similarly for licences.
> Also, administrators perform many tasks on items before they hit the
> public repository, and a navigable audit trail on item activities which
> can actually be interacted with would be of great benefit.
>
> Cheers,
>
> --
> Richard
> ------------------------------------------------------------------------
> Richard Jones            | t: +44 (0)20 759 [48614 / 41815]
> Web & Database           | e: [EMAIL PROTECTED]
>    Technology Specialist  | b: http://chronicles-of-richard.blogspot.com/
> Imperial College London  |
> ------------------------------------------------------------------------
>
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