July 2010
Intermediate to advanced
448 pages
12h 22m
English
Content preview from Physical Database Design
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14.3 Star and Snowflake Schemas 321
Notice that this dimension table is not normalized. Data warehouse design is
driven by efficiency of query response and simplicity. Normalization is not the driving
factor as it is in the design of databases for daily transactions. Dimensional modeling is
the dominant approach utilized for designing data warehouses. The companion book
on logical design [Teorey, Lightstone, and Nadeau 2006] includes an overview of the
dimensional modeling approach. Kimball and Ross [2002] is an excellent and detailed
resource covering the dimensional modeling approach for data warehousing.
Figure 14.4 illustrates two date dimensions ...
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