On Tue, Oct 13, 2009 at 11:24 PM, Craig Ringer
<craig@postnewspapers.com.au> wrote:
>
> A better question might by "why on earth are you messing about with the
> data directory when you don't understand what it does and how it works?".
Not that anyone wants to discourage exploring. It's just there are
better ways to go about things than deleting / removing files if
you're not sure what they do.
There's a whole section on internals here:
http://www.postgresql.org/docs/8.4/interactive/storage.html
If we go here:
http://www.postgresql.org/docs/8.4/interactive/storage-file-layout.html
There's a nice section on what each file-type / directory does.