We met with one of the BI vendors to discuss query and reporting and multidimensional reporting. As the discussion evolved, we talked about discarding the data marts (star schema) and just building cubes instead. We have a relational enterprise data warehouse. We planned on creating data marts based on the KPIs identified by the customer. A query and reporting tool would create reports and user could query the data directly. Can cubes replace marts? When do you need both?
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