Stock Trading and Other Things

How does a website related to stock exchange works?

I need help, bit in detail though shorter the better.
I would like to know how these websites related to stock exchange work?
Do they connect to stock exchange server directly or there is some other way?

Public Comments

1. Yes, they keep on updating their website EVERY SECOND !!!!!

THERE ARE THOUSANDS OF EMPLOYEES SITTING ON COMPUTERS UPDATING THE ENTIRE DATA.

http://www.ehow.com/how-does_4597105_stock-conversion-work.html

http://www.ehow.com/how-does_4687196_an-etf-work.html

http://www.ehow.com/how-does_4571054_stock-work.html