3
Building the Data Model
In this chapter, you are now going to create a coherent and intelligent data model. Creating a data model is primarily the process of creating necessary relationships between the different data sources that are leveraged in your model.
Self-service BI would not be possible without a functional data model. Historically, BI projects focused on building data models could take months and even years to develop when working within the rigid structure and constraints of a corporate business intelligence environment. Unfortunately, studies show that about 50 percent of all enterprise BI projects fail. These projects fail because the costs are often too high; these projects can cost anywhere from hundreds of thousands of dollars ...
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