Question: 3- (2 points) [OLAP Operations] Assume we have a data cube consists of three dimensions: Product, Time and Location. The values (i.e., facts) show the

3- (2 points) [OLAP Operations] Assume we have a data cube consists of three dimensions: Product, Time and Location. The values (i.e., facts) show the revenue in thousand dollars.

Assume that we have the following hierarchy:

Which OLAP operations should be performed in order to answer the following questions:

a) [1 point] Total revenue earned by selling PCs in Ontario in 2015.

b) [1 point] Total revenue earned by each product in each country in 2014.

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