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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
8
1.1
The Relational and Object Data Models
In addition to the denormalization of previously applied normaliza-
tion, some relational databases allow for specialized objects. Oracle Data-
base allows the creation of specialized database objects largely for the
purpose of speeding up query processing. One of the most effective meth-
ods of increasing query performance is by way of reducing the number of
joins in queries. Oracle Database allows the creation of various specialized
objects just for doing this type of thing. Vaguely, these specialized objects
are as follows:
Bitmaps and IOTs
. Special index types, such as bitmaps and index
organized tables. ...
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Publisher Resources

ISBN: 9781555583354