ODS and cube data

Hi All,
Please let me know the difference between ODS and Cube practically with a simple example. I red and know diferences but I did't get the concept.
1. What detail level reporting. How ODS supports this and not in Cube?
2 .When we go for ODS(daily/latest info) and Cube(monthly/ aggreated info )?
3.Where can we see the diff. I know overwrite & addition?
Please explain me with example.Surely I will assign points.
Thanks in advance.
Cheers,
Sri.

HI ALL,
Thanks for your immediate replies.
I did a file upload with full load to ODS:
1st load
======
CID PRICE QTY
C01 10 1000
C02 20 2000
C01 20 2000
In Active table & change logs:
======================
CID PRICE QTY
C01 20 2000
C02 20 2000
2nd load
======
CID PRICE QTY
C01 35 1500
C02 40 2200
C03 5 100
2nd load Active table
=================
CID PRICE QTY
C01 35 1500
C02 40 2200
C03 5 100
In Change table
======================
CID PRICE QTY
C01 20 2000 N
C02 20 2000 N
C01 35 1500
C01 20- 2000- X
C02 40 2200
C02 20- 2000- X
C03 5 100 N
I generate report on ODS, but we I can't see any details. It shows only latest info , what we have in Active table.
We can do the same detailed in info cube also, if we check DB aggregation.
I have a doubt:
customer orders in a day :
CID PRICE QTY DAY
C01 5 15 2007.05.03
C01 5 25 2007.05.03
C01 5 35 2007.05.03
C01 5 45 2007.05.03
we load this 4 times and overwrites evry time and see the latest record.
In ods : we can see :this only : latest :
C01 5 45 2007.05.03
In Cube: we can see
CID PRICE QTY DAY
C01 5 15 2007.05.03
C01 5 25 2007.05.03
C01 5 35 2007.05.03
C01 5 45 2007.05.03
and if we check DB aggregation. we can see
C01 5 120 2007.05.03 (summed all)
With my know knowlege we can see detail BW report on cube . all 4 records we can see , but in ODS we ca see this rec
C01 5 45 2007.05.03 only
Please explain , how ODS support detail record and cube supports summarized.
Thanks in advance.
Cheers,
Sri.

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Message was edited by:
        Puneet Chawla
Message was edited by:
        Puneet Chawla

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