Database Structure

I have had a number of years experience with Oracle.  I am considering using
Postgresql but while there is an enourmous amount of documentation
available, none of it seems to answer some questions which I have to resolve
if I am to use it.

1. Does postgresql have the concept of table spaces as used in Oracle?
2. Is it possible to construct the data base so that the index for a table
can reside on a different disk to the data for the table?
3. Is there an interface for postgresql which can be used to link the data
base to web pages?



Regards



Peter Goggin----