Book Image

The Data Warehouse Toolkit - Third Edition

By : Ralph Kimball, Margy Ross
5 (1)
Book Image

The Data Warehouse Toolkit - Third Edition

5 (1)
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

Four-Step Dimensional Design Process

Throughout this book, we will approach the design of a dimensional model by consistently considering four steps, as the following sections discuss in more detail.

Step 1: Select the Business Process

A business process is a low-level activity performed by an organization, such as taking orders, invoicing, receiving payments, handling service calls, registering students, performing a medical procedure, or processing claims. To identify your organization’s business processes, it’s helpful to understand several common characteristics:

  • Business processes are frequently expressed as action verbs because they represent activities that the business performs. The companion dimensions describe descriptive context associated with each business process event.
  • Business processes are typically supported by an operational system, such as the billing or purchasing system.
  • Business processes generate or capture key performance metrics. Sometimes the...