PORTAL DEVELOPMENT

HI SDNS.

if anyone have any materials regarding development of roles ,worksets, pages iviews plz send me.

i have some questions also.

what is KM?

what is the use of that?

when doesw it come into picture?

what is software deployment manager?

what is clustering?

what is the difference b/w WAS & appln. server?

and also define WAS?