Book Image

Oracle Warehouse Builder 11g: Getting Started

By : Bob Griesemer
Book Image

Oracle Warehouse Builder 11g: Getting Started

By: Bob Griesemer

Overview of this book

In today's economy, businesses and IT professionals cannot afford to lag behind the latest technologies. Data warehousing is a critical area to the success of many enterprises, and Oracle Warehouse Builder is a powerful tool for building data warehouses. It comes free with the latest version of the Oracle database. Written in an accessible, informative, and focused manner, this book will teach you to use Oracle Warehouse Builder to build your data warehouse. Covering warehouse design, the import of source data, the ETL cycle and more, this book will have you up and running in next to no time. This book will walk you through the complete process of planning, building, and deploying a data warehouse using Oracle Warehouse Builder. By the book's end, you will have built your own data warehouse from scratch. Starting with the installation of the Oracle Database and Warehouse Builder software, this book then covers the analysis of source data, designing a data warehouse, and extracting, transforming, and loading data from the source system into the data warehouse. You'll follow the whole process with detailed screenshots of key steps along the way, alongside numerous tips and hints not covered by the official documentation.
Table of Contents (15 chapters)
Oracle Warehouse Builder 11 Getting Started
Credits
About the Author
About the Reviewers
Preface
Index

Additional editing features


We stepped through the process of building our data warehouse from start to finish in this book, but did not address having to go back and make changes to objects or mappings we've already completed. This presents some unique challenges as we saw when we alluded briefly to an error that might occur if changes are made to a dimension, but not the underlying table. Let's talk about the features the Warehouse Builder has that will help us with keeping a track of the various versions of our objects as we make changes.

Metadata change management

Metadata change management includes keeping a track of different versions of an object or mapping as we make changes to it, and comparing objects to see what has changed. It is always a good idea to save a working copy of objects and mappings when they are complete and function correctly. That way, if we need to make modifications later and something goes wrong, or we just want to reproduce a system from an earlier point in...