Book Image

The Data Warehouse Toolkit - Third Edition

By : Ralph Kimball, Margy Ross
Book Image

The Data Warehouse Toolkit - Third Edition

By: Ralph Kimball, Margy Ross

Overview of this book

The volume of data continues to grow as warehouses are populated with increasingly atomic data and updated with greater frequency. Dimensional modeling has become the most widely accepted approach for presenting information in data warehouse and business intelligence (DW/BI) systems. The goal of this book is to provide a one-stop shop for dimensional modeling techniques. The book is authored by Ralph Kimball and Margy Ross, known worldwide as educators, consultants, and influential thought leaders in data warehousing and business intelligence. The book begins with a primer on data warehousing, business intelligence, and dimensional modeling, and you’ll explore more than 75-dimensional modeling techniques and patterns. Then you’ll understand dimension tables in-depth to get a good grip on retailing and moved towards the topics of inventory. Moving ahead, you’ll learn how to use this book for procurement, order management, accounting, customer relationship management, and many more business sectors. By the end of this book, you’ll be able to gather all the essential knowledge, practices, and patterns for designing dimensional models.
Table of Contents (31 chapters)
Free Chapter
1
Cover
2
Title Page
3
Copyright
4
About the Authors
5
Credits
6
Acknowledgements
29
Index
30
Advertisement
31
End User License Agreement

Value Chain Introduction

Most organizations have an underlying value chain of key business processes. The value chain identifies the natural, logical flow of an organization’s primary activities. For example, a retailer issues purchase orders to product manufacturers. The products are delivered to the retailer’s warehouse, where they are held in inventory. A delivery is then made to an individual store, where again the products sit in inventory until a consumer makes a purchase. Figure 4-1 illustrates this subset of a retailer’s value chain. Obviously, products sourced from manufacturers that deliver directly to the retail store would bypass the warehousing processes.

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Figure 4-1: Subset of a retailer’s value chain.

Operational source systems typically produce transactions or snapshots at each step of the value chain. The primary objective of most analytic DW/BI systems is to monitor the performance results of these key processes. Because each process produces...