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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
198 DB2 Cube Views: A Primer
During the refresh of an MQT (either INCREMENTAL and FULL refresh), there is
a time associated to join the dimensions and fact tables involved on the MQT.
Depending on how well tuned your physical data model is, it provides significant
results during population of MQTs. Also, there are different techniques that you
can take to populate the MQTs like load instead of refresh, or avoid logging data.
During query execution time, the DB2 optimizer considers the MQT like regular
tables when it comes to access plan strategies. Good indexes on MQTs also are
important for query optimization as well update statistics on base ...
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Publisher Resources

ISBN: 0738499730Purchase book