Did you got an interview and look for answers or just doing a certification?
Anyway ... avoid double posting, it will not give you double answers but more no answer at all !
And rmoff replied to your other topic.
Don't cross post. Keep one one the two threads and close the other! You seem to be doing that continuously for several threads - please don't.
I would strongly recommend for you to buy (online-> very cheap) the Oracle Business Intelligence 11g R1 cookbook. Hopefully it will give a high level information with lots of pictures.
I have used that before as well as a handy reference material.