My understanding of pgSQL is that, when a row is updated or deleted, the
old row is marked as such, but maintained in the DB until I vaccuum.
(This certainly would ease the implementation of transactions.)
Please correct me if I am mistaken. Assuming for now this is true...
Is there some way to view the old rows or even restore one?
And doesn't this mean a timestamp must be automagically associated with
each row? How do I access these timestamps?
