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Oracle Data Warehouse Tuning for 10g
book

Oracle Data Warehouse Tuning for 10g

by Gavin JT Powell
April 2011
Intermediate to advanced content levelIntermediate to advanced
504 pages
16h 49m
English
Digital Press
Content preview from Oracle Data Warehouse Tuning for 10g
82
4.2
Materialized View Syntax
lations within partitions only, the situation might be quite different.
Once again, it is all about requirements.
The sequence by which materialized views are refreshed is highly sig-
nificant, because a materialized view can be created from another
materialized view—an aggregation of an aggregation. If a data ware-
house contains a large number of nested materialized views, all built
in a hierarchical structure of aggregations, this process could become
very complex and difficult to manage.
4.2 Materialized View Syntax
You now have a basic knowledge of materialized views, their benefits, and
their potential pitfalls. ...
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Publisher Resources

ISBN: 9781555583354