The Data Warehouse Toolkit [PDF]

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PDF Title : The Data Warehouse Toolkit
Total Page : 601 Pages
Author: Ralph Kimball
PDF Size : 4.0 MB
Language : English
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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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