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

Real-Time Implications

Real-time processing is an increasingly common requirement in data warehousing. There is a strong possibility that your DW/BI system will have a real-time requirement. Some business users expect the data warehouse to be continuously updated throughout the day and grow impatient with stale data. Building a real-time DW/BI system requires gathering a very precise understanding of the true business requirements for real-time data and identifying an appropriate ETL architecture, incorporating a variety of technologies married with a solid platform.

Real-Time Triage

Asking business users if they want “real-time” delivery of data is a frustrating exercise for the DW/BI team. Faced with no constraints, most users will say, “That sounds good; go for it!” This kind of response is almost worthless.

To avoid this situation, we recommend dividing the real-time design challenge into three categories, called instantaneous, intra-day, and daily. We...