Oracle 10g Data Warehousing by Lilian Hobbs PhD, Susan Hillson MS in CIS Boston

By Lilian Hobbs PhD, Susan Hillson MS in CIS Boston University, Visit Amazon's Shilpa Lawande Page, search results, Learn about Author Central, Shilpa Lawande, , Pete Smith

Oracle 10g information Warehousing is a consultant to utilizing the information Warehouse positive aspects within the most up-to-date model of Oracle -Oracle Database 10g. Written by means of humans at the Oracle improvement crew that designed and carried out the code and by means of individuals with event enforcing warehouses utilizing Oracle expertise, this completely up to date and prolonged version presents an insider's view of the way the Oracle Database 10g software program is better used in your application.It offers an in depth examine the hot gains of Oracle Database 10g and different Oracle items and the way those are utilized in the knowledge warehouse. This publication will provide help to install the Oracle database and properly use the hot Oracle Database 10g good points in your facts warehouse. It comprises walkthroughs and examples on the right way to use instruments comparable to Oracle Discoverer and studies to question the warehouse and generate reviews that may be deployed over the internet and achieve greater perception into your business.This how-to consultant presents step-by-step directions together with display captures to help you layout, construct and optimize functionality of the knowledge warehouse or info mart. it's a 'must have' reference for database builders, directors and IT pros who are looking to get to paintings now with all the latest good points of Oracle Database 10g. It offers a close examine the recent positive factors of Oracle Database 10g and different Oracle items and the way those are utilized in the information warehouse, including:* easy methods to use the precis administration positive aspects, together with Materialized perspectives and question rewrite, to top impact to noticeably increase question functionality* easy methods to installation enterprise intelligence to the net to meet trendy altering and critical company necessities* utilizing Oracle OLAP and knowledge Mining concepts* the right way to comprehend the warehouse atmosphere and the way it's utilized by new good points within the database together with the best way to enforce a excessive availability warehouseenvironment* utilizing the new administration infrastructure in Oracle Database 10g and the way this allows you to deal with your warehouse setting

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3 A Historical Perspective 5 the differences between the two systems to query them on-line? This may be an area that you want to consolidate. Do you have sufficient historical detail for analysis purposes? How many months of history are you able to keep on-line? Did you save the right level of detail? Did you even save all of the historical data? Are you able to analyze the sales for each product for each geographical region before and after a major reorganization of the sales force reporting structure?

It was discovered that many of the same benefits of a warehouse could be scaled down to the department or line of business, solving a particular business problem. Data warehouses contain multiple subjects that provide a consolidated enterprise view across all lines of business. Data marts are subject-specific or application-specific data warehouses and contain data for only one line of business, such as sales or marketing. The major difference between a data mart and a data warehouse is the scope of the information they contain.

Metadata can be used for either technical or business purposes. As data flows from the operational systems into the warehouse, it is extracted, transformed, and summarized. Technical metadata is needed to describe this process and is essential for proper “drill down” to finer levels of detail. Business metadata allows end users to determine which data is available in the warehouse or data mart and how it can be accessed. Metadata provides the integration and uniformity of data across the corporation.

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