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Book Overview & Buying
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Table Of Contents
The Data Warehouse Toolkit - Third Edition
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Customer behavior can be very complex. In this section, we’ll discuss the handling of customer cohort groups and capturing sequential behavior. We’ll also cover precise timespan fact tables and tagging fact events with indicators of customer satisfaction or abnormal scenarios.
With customer analysis, simple queries such as how much was sold to customers in this geographic area in the past year rapidly evolve to much more complex inquiries, such as how many customers bought more this past month than their average monthly purchase amount from last year. The latter question is too complex for business users to express in a single SQL request. Some BI tool vendors allow embedded subqueries, whereas others have implemented drill-across capabilities in which complex requests are broken into multiple select statements and then combined in a subsequent pass.
In other situations, you may want to capture the set of customers...
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