[ZODB-Dev] Undo differences between Z2 and Z3

[David Binger]

On May 17, 2006, at 6:54 AM, Jim Fulton wrote:

> It was claimed earlier in this thread, that plone only lets you  
> undo the
> most recent transactions.  If this is true, then that should not be
> a problem.  A facility that let you only undo "last" transactions
> would be safe.  It would also be useful, at least for single-user
> systems.  (Note that definition of "last" gets a little tricky in the
> presense of transactional undo.)

I would say that the undo the last transaction would be
useful for all systems, but safe only for systems where all
writing comes from one user.