December 2011
Intermediate to advanced
269 pages
7h 26m
English
book
Expert Indexing in Oracle Database 11g: Maximum Performance for Your Database
by Darl Kuhn, Sam R. Alapati, Bill Padfield
Content preview from Expert Indexing in Oracle Database 11g: Maximum Performance for Your Database
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CHAPTER 3
Bitmap Indexes
Bitmap indexes are best suited for data warehouse or decision support systems (DSS). Common to the data warehouse is the star schema, in which a central fact table contains all the detailed information for a particular subject such as customer revenue, and number of related dimension tables containing associated reference type data on a particular dimension such as time or geography. In a star schema, the dimension tables are the parent and the central fact table is the child table. See Figure 3-1 for a sample data model of a simple star schema.
With Oracle, the database configuration specific for the star schema is ...
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