BAR now and with 7.1

I wanna know how BAR (Backup And Restore) is done now (PostgreSQL 7.0.2) and
how it will be done when PostgreSQL 7.1 comes out.
What I want is a total recover of data up to the time that the database got
scratched.
What I mean is:
Certain people write to the database all day long. Every mid-night I do a
full backup (level 0). If the database gets destroyed for any reason, I would
do I full restore of the last mid-night backup, but I also want all the info
that was changed after the last Level 0 backup.
Is this posible with PostgreSQL 7.0.2?
Will it be posible with PostgreSQL 7.1?

Thanks!!

--
"And I'm happy, because you make me feel good, about me." - Melvin Udall
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Martín Marqués email: martin(at)math(dot)unl(dot)edu(dot)ar
Santa Fe - Argentina http://math.unl.edu.ar/~martin/
Administrador de sistemas en math.unl.edu.ar
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