March 2007
Intermediate to advanced
488 pages
13h 46m
English
book
OnDemand SQL Performance Analysis Simplified on DB2 for i5/OS in V5R4
by Hernando Bedoya, Jaime Gaug, James Kerl, Ser Ser NG, Jose Cardoso dos Santos
Content preview from OnDemand SQL Performance Analysis Simplified on DB2 for i5/OS in V5R4
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70 OnDemand SQL Performance Analysis Simplified on DB2 for i5/OS in V5R4
Figure 3-37 The detailed index descriptions
3.7.2 MQT (Materialized Query Tables) Evaluator
Materialized Query Table (MQT) support is a new feature introduced in V5R3 via a group of
program temporary fixes (PTFs) delivered as of April 29, 2005. MQTs are built directly into
V5R4.
An MQT is a DB2 table that contains the results of a query, along with the query’s definition.
An MQT can also be thought of as a materialized view or automatic summary table that is
based on an underlying table or set of tables. These underlying tables can be referred to as
the base tables. By running ...
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