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| PDF Title : | The Data Warehouse Toolkit |
|---|---|
| Total Page : | 601 Pages |
| Author: | Ralph Kimball |
| PDF Size : | 4.0 MB |
| Language : | English |
| Rights : | wiley.com |
| PDF Link : | Available |
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The Data Warehouse Toolkit – Book
Beyondthe reused dimensions from the policy-centric schemas and the new claimcentric dimensions just listed, there are a large number of indicators and descriptions related to a claim. Designers are sometimes tempted to dump all these descriptive attributes into a claim dimension.
This approach makes sense for high-cardinality descriptors, such as the specifi c address where the loss occurred or a narrative describing the event. However, in general, you should avoid creating dimensions with the same number of rows as the fact table.
The Data Warehouse Toolkit PDF
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