For the "My Lists" feature what steps are actually involved retrieving an
altered/deleted listing like "[_] Record b2491348 is not available
03-12-2013" by that bibliographic reference code from the 7 month system
backup? Perhaps the backup is compressed and searching a compressed file is
a barrier for what could otherwise be relatively straight forward with
something like grep
http://en.wikipedia.org/wiki/Grep

In the future when we have real computers it'll be trivial to get
information from a backup with the reference code.


On Tue, Oct 15, 2013 at 12:32 PM, McDonald, Stephen <
[log in to unmask]> wrote:

>
>
> > a) Forensics studies deal with how to retrieve "deleted" "unarchived"
> data. So called "deleted" data is actually available.
>
> Computer forensics cannot always get the data back.  Television crime
> shows greatly exaggerate the capabilities of computer forensics.  It
> depends on what format the data was in, how the data was deleted, and what
> has happened on the computer since it was deleted.  Even in the cases where
> it is possible, it requires taking the system offline (making it
> unavailable for other people to use), requires specialized software, can
> take days of work, and often can retrieve only part of the data.  This is
> not feasible in a working database like your library network.
>
> > b) Setup the system not to delete records belonging to users. Let users
> keep their information saved for followup. Or at the very least notify
> users beforehand.
>
> Millennium cannot do that.  The only internal mechanism in Millennium to
> prevent records from being deleted is by controlling who can perform
> deletions.  There is no mechanism in Millennium to notify either the person
> deleting or the owner of a review file that a record being deleted is in a
> review file.  It is not feasible for someone deleting records to manually
> check every review file to see whether a record is in one of them.
>
> The only way to control deletions is by careful training, limiting who can
> delete data, and establishing policies on when and how data are deleted.
>  This is something between you and the consortium, but it sounds like
> Minuteman has established policies and is following them.
>                                         Steve McDonald
>                                         [log in to unmask]
>