Hi
i cant say mush on valve but about
realm is as ,it is as below.
A Realm is a "database" of usernames and passwords that identify valid users of a web application (or set of web applications), plus an enumeration of the list of roles associated with each valid user. You can think of roles as similar to groups in Unix-like operating systems, because access to specific web application resources is granted to all users possessing a particular role (rather than enumerating the list of associated usernames). A particular user can have any number of roles associated with their username.
If you still want to know more than you must go to
Welcome! - The Apache Software Foundation
i hope it helps
Sania:>Winning is not important but it is the only thing.