Download Oracle 10g Data Warehousing by Lilian Hobbs PhD, Susan Hillson MS in CIS Boston PDF
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 advisor to utilizing the information Warehouse positive aspects within the newest model of Oracle -Oracle Database 10g. Written through humans at the Oracle improvement staff that designed and applied the code and through individuals with event enforcing warehouses utilizing Oracle know-how, this completely up-to-date and prolonged variation offers an insider's view of the way the Oracle Database 10g software program is healthier used to your application.It offers an in depth examine the hot positive factors of Oracle Database 10g and different Oracle items and the way those are utilized in the information warehouse. This ebook will aid you installation the Oracle database and properly use the recent Oracle Database 10g beneficial properties in your facts warehouse. It includes walkthroughs and examples on the way to use instruments equivalent to Oracle Discoverer and studies to question the warehouse and generate reviews that may be deployed over the net and achieve larger perception into your business.This how-to advisor presents step-by-step directions together with reveal captures to provide help to layout, construct and optimize functionality of the information warehouse or info mart. it's a 'must have' reference for database builders, directors and IT execs who are looking to get to paintings now with all the most up-to-date positive factors of Oracle Database 10g. It presents a close examine the hot positive factors of Oracle Database 10g and different Oracle items and the way those are utilized in the information warehouse, including:* how one can use the precis administration positive aspects, together with Materialized perspectives and question rewrite, to most sensible impact to appreciably enhance question functionality* find out how to set up company intelligence to the net to fulfill ultra-modern altering and significant enterprise necessities* utilizing Oracle OLAP and information Mining ideas* tips to comprehend the warehouse atmosphere and the way it's utilized by new good points within the database together with how you can enforce a excessive availability warehouseenvironment* utilizing the new administration infrastructure in Oracle Database 10g and the way this lets you deal with your warehouse atmosphere
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It is hard to say how many dimensions your design will require, but typically there will be less than 20 dimensions and at least 4. Therefore, our data warehouse will comprise only a few tables, but it will have huge storage demands because of the large number of rows in the fact table. 5 Warehouse Keys Data in the warehouse will most likely come from a variety of sources, and a product code in one system may not be the same as in another system. Another problem is that when data is being stored over a period of time, keys used in the production system could be reused.
Knowing which types of customers buy which types of products: You can anticipate demand and increase proﬁtability. Demographic data can be used to help choose a location to place a new retail store. Adding Dun and Bradstreet data: This contains information on companies and products. Many tools are available in the marketplace to help automate parts of the ETL process. An overview of Oracle Warehouse Builder, which can be used to help automate the extraction, transformation, transport, and load aspects of the process, will be presented in Chapter 13.
To store one hour of video requires about 1GB of storage. To store one minute of audio requires a little less than 1MB. Images can range from 20KB to as much as 60MB depending on the type and quality of the image. Documents can be tagged with XML-based metadata and stored in the Oracle database. However, a data warehouse should not be viewed as a repository for archived data; this is not its purpose. 4 Higher Availability Ensuring the availability of the data warehouse is becoming more and more mission critical for many businesses.