What is cumulative hierarchy?

Hi there;

I want to ask a question. At this link (http://docs.oracle.com/cd/E11882_01/server.112/e25554/advmv.htm) there is a sentence as such:

A hierarchical cube includes data grouped along the hierarchy of rollup of each of its dimensions and these aggregations are combined on the dimensions.


What is rollup hierarchy? Thanks in advance.

Hello

Referring to aggregation functions

http://docs.Oracle.com/CD/B19306_01/server.102/b14223/Aggreg.htm

-Pavan Kumar N

Tags: Database

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                       FROM    vill
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