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Cognos makes extensive use of data warehousing concepts. Most data warehouses are built using dimensional modeling techniques (also known as the “Kimball style”). Data is divided into fact and dimension tables, which are joined together in star schemas. Restructuring data in this fashion takes a great deal of effort, both in planning and implementation. These types of changes are only done because they are necessary for high-quality analytics. Understanding more about how they work and why they are important can help make Cognos a more efficient and effective reporting tool. Read more