Apache multiple DocumentRoot

Question

How can I have the following setup in apache?

http://server/ABC/* should be served by /var/www/ABC/*

http://server/P

Answer 1

Use Alias:

Alias /ABC/ /var/www/ABC/
Alias /PQR/ /var/www/PQR/

Leave the document root pointing to /var/www/Others/index.php. It could do the trick. :)