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The Data Warehouse Development Life Cycle

Data Warehouse Query Analysis

The fourth and final process of the data warehouse analysis is the analysis of data warehouse queries. From Chapter 1, you should have a very general idea about the types of queries that data warehouses can address. We can now take a look at how the data can be logically stored to optimize query speed. In this phase of analysis, developers need to take a close look at the types of queries that end users plan to use. Query analysis assists in warehouse design. Developers also need to look at how to model the access requirements within Oracle. In addition, this analysis aids in determining the types of front ends required for the warehouse. Front ends include multidimensional front ends such as Oracle Express, a data mining tool report, or any of a number of ad hoc query front ends used for Oracle warehouses. Unlike an OLTP system, which may have hundreds of types of queries, all of the queries against a data warehouse fall into the following four categories:

This is an excerpt from "High Performance Data Warehousing", copyright 1997.
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Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

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