April 2007
Beginner to intermediate
416 pages
10h 45m
English
Content preview from Foundations of SQL Server 2005 Business IntelligenceBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 7. Cube Storage and Aggregation
Now that you've completed your cube's logical design, it's time to design the physical storage mechanisms, including file placement and aggregations.
This chapter covers the details of physical cube processing and storage, including an explanation of the what, when, and why to use any of the three cube storage methods: MOLAP, HOLAP, or ROLAP. These storage-type acronyms stand for multidimensional, hybrid, or relational OLAP. The chapter also explains cube aggregationswhat they are and when and when not to use the default cube-processing settings (which uses 0% aggregations). Following is a complete list of topics for this chapter:
Using default storage: MOLAP, no aggregations
Designing custom aggregations
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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