How to model this situation?

Question

Hi experts,
I am BW 3.5. I am working with PS. I need to model the next example:
Project 1
Hs. % (Hs*%) % Real
Phase 1 37.2
Sub Phase 1 37.2
Sub Sub Phase 1 42.8
Ítem 1 10 0% 0(10 * 0 / 100) 0%
Ítem 2 5 100% 5 (5 * 100 / 100) 100 %
Ítem 3 20 50% 10(20 * 50 / 100) 50 %
Sub Sub Phase 2 0.33
Ítem 1 15 10% 1.5(15 * 10 / 100) 1.5 %
Ítem 2 25 50% 12.5(25* 50 / 100) 12.5 %
Ítem 4 15 30% 4.5(15 * 30 / 100) 4.5 %
This is a hierarchy!!!
The Sub Sub Phase X percentage is: ((Hs*%)/100) / Hs
Hs (Hs*%)
Item 1 10 0(10 * 0 / 100)
Item 2 5 5(5 * 100 / 100)
Item 3 20 10(20 * 50 / 100)
Total 35 15
Sub Sub Phase 1 % = 15 / 35 = 42.8
The Sub Phase X percentage is: ((Hs*%)/100) / Hs
Hs (Hs*%)
Item 1 10 0 (10 * 0 / 100)
Item 2 5 5 (5 * 100 / 100)
Item 3 20 10 (20 * 50 / 100)
Item 1 15 1.5(15 * 10 / 100)
Item 2 25 12.5(25* 50 / 100)
Item 4 15 4.5(15 * 30 / 100)
Total 90 33.5
Sub Sub Phase 1 % = 33.5 / 90 = 37.22
and so on....
Help me please and thanks.

Answer 1

Apple has provided a tutorial that you can run through here:
http://developer.apple.com/cocoa/coredatatutorial/index.html
I have found their tutorials a great starting place for getting a simplified introduction to the new technologies.
If you're still having trouble modeling your data after you read that, let us know.
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