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DB2 Cube Views: A Primer
book

DB2 Cube Views: A Primer

by Corinne Baragoin, Geetha Balasubramaniam, Bhuvaneshwari Chandrasekharan, Landon DelSordo, Jan B. Lillelund, Julie Maw, Annie Neroda, Paulo Pereira, Jo A. Ramos
September 2003
Beginner to intermediate content levelBeginner to intermediate
754 pages
18h 9m
English
IBM Redbooks
Content preview from DB2 Cube Views: A Primer
136 DB2 Cube Views: A Primer
4.4 What you need to know before optimizing
There are basically four things that you need to have or know before using
Optimization Advisor:
1. Get at least a cube model and one cube defined.
2. Make sure that referential integrity and informational constraints are in place
on the base tables.
3. Know or have an idea of the type of queries that will be used on the OLAP
database.
4. Understand how Optimization Advisor uses the cube model/cube definitions
and how they interact together to leverage query optimization.
4.4.1 Get at least a cube model and one cube defined
The first and foremost design recommendation is that there should only be one
cube model created per star schema. There are several reasons for this, but ...
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Publisher Resources

ISBN: 0738499730Purchase book