Skip to Main Content
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
113
5
Oracle Dimension Objects
This chapter examines Oracle dimension objects. In a star schema, dimen-
sions are denormalized into a single layer of dimensions. In a snowflake
schema, dimensions are normalized out to multiple hierarchical layers.
Dimension objects can be used to represent these multiple layers for both
star and snowflake schemas, possibly helping to increase performance of
joins across dimension hierarchies.
Note:
This chapter uses a number of example dimensional structure hierar-
chies in order to demonstrate the widely variable applicability of dimen-
sional objects.
5.1 What Is a Dimension Object?
In a data warehouse a dimension, ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Oracle 10g Data Warehousing

Oracle 10g Data Warehousing

Lilian Hobbs, Susan Hillson, Shilpa Lawande, Pete Smith
Expert Oracle Enterprise Manager 12c

Expert Oracle Enterprise Manager 12c

Kellyn Pot'vin, Anand Akela, Gokhan Atil, Bobby Curtis, Alex Gorbachev, Niall Litchfield, Leighton Nelson, Pete Sharman

Publisher Resources

ISBN: 9781555583354