On Mon, Nov 17, 2008 at 9:15 AM, Abah Joseph <[EMAIL PROTECTED]> wrote: > The question came to my mind is, How did large website like Yahoo handle > such data? Sure. Yahoo users may be more than 20 millions users or so.
Very large data sets are often partitioned in some way so that a given lookup doesn't have to be performed against the entire data set. That's quite an expansive topic in fact. http://en.wikipedia.org/wiki/Partition_(database) -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php