Does OLAP cubes store primary fact data (10gr2)?

Does Oracle OLAP(OLAP option of 10g database) physically store inside cube data of fact table it is based on?
More detailed:
1. There are fact table F and several dimension tables around it - D1, D2, D3
2. In analytical workspace there is a cube C. C mapped to F and D1, D2, D3
3. After the cube have been maintained does it contain all the data of table F? Will records of table F be duplicated in cube С somehow?

Hi,
Please I need your help.
In the case where the Cube store primary fact data (On 11gR2), Is the result of a request on the Cube the same that a request with ROLAP (under SQL Developer) ?
My Fact table (C) contains one million lines. When creating a request on Obiee (using the Cube), I get just 1900 lines... :(
Thanks and regards

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