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Book Overview & Buying
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Table Of Contents
The Data Warehouse Toolkit - Third Edition
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In this chapter we focused on two primary concepts. First, we looked at the accumulating snapshot fact table to track application or research grant pipelines. Even though the accumulating snapshot is used much less frequently than the more common transaction and periodic snapshot fact tables, it is very useful for tracking the current status of a short-lived process with standard milestones. As we described, accumulating snapshots are often complemented with transactional or periodic snapshot tables.
Second, we explored several examples of factless fact tables. These fact tables capture the relationship between dimensions in the case of an event or coverage, but are unique in that no measurements are collected to serve as actual facts. We also discussed the handling of situations in which you want to track events that didn’t occur.
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