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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
1.2
Data Modeling for Data Warehouses 13
Chapter 1
more scope for granularity using the object model than with the relational
model. In a data warehouse logical granularity in the form of normalized
relations or autonomous objects leads to inefficiencies due to a higher reli-
ance on joins between entities, or in the case of the object model, entities
become classes and objects.
1.1.3 The Object-Relational Data Model
The object-relational data model simply combines aspects of the relational
model with the object model. It could be said that the object-relational
model attempts to squeeze parts of the object model into the relational
model—unfortunately ...
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Publisher Resources

ISBN: 9781555583354