> >> Maybe his real goal "all the backups readily available to be read by
> >> my program (opening the backup read only)" is to have a historical
> >> record of what certain records looked like in the past.
What postgresql "time travel"? I have never used it, and it looks a
little bit unmaintained, but it might be perfect with some tweaking:
contrib/spi/README.timetravel
I know that someone at SFPUG presented on using time travel last year,
and she may have more info .