Skip to Main Content
The Data Warehouse Toolkit: The Definitive Guide to Dimensional Modeling, 3rd Edition
book

The Data Warehouse Toolkit: The Definitive Guide to Dimensional Modeling, 3rd Edition

by Ralph Kimball, Margy Ross
July 2013
Beginner to intermediate content levelBeginner to intermediate
600 pages
17h 31m
English
Wiley
Content preview from The Data Warehouse Toolkit: The Definitive Guide to Dimensional Modeling, 3rd Edition

Chapter 5

Procurement

We explore procurement processes in this chapter. This subject area has obvious cross-industry appeal because it is applicable to any organization that acquires products or services for either use or resale.

In addition to developing several purchasing models, this chapter provides in-depth coverage of the techniques for handling dimension table attribute value changes. Although descriptive attributes in dimension tables are relatively static, they are subject to change over time. Product lines are restructured, causing product hierarchies to change. Customers move, causing their geographic information to change. We'll describe several approaches to deal with these inevitable dimension table changes. Followers of the Kimball methods will recognize the type 1, 2, and 3 techniques. Continuing in this tradition, we've expanded the slowly changing dimension technique line-up with types 0, 4, 5, 6, and 7.

Chapter 5 discusses the following concepts:

  • Bus matrix snippet for procurement processes
  • Blended versus separate transaction schemas
  • Slowly changing dimension technique types 0 through 7, covering both basic and advanced hybrid scenarios

Procurement Case Study

Thus far we have studied downstream sales and inventory processes in the retailer's value chain. We explained the importance of mapping out the enterprise data warehouse bus architecture where conformed dimensions are used across process-centric fact tables. In this chapter we'll extend these concepts ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Fundamentals of Data Engineering

Fundamentals of Data Engineering

Joe Reis, Matt Housley
Fundamentals of Data Engineering

Fundamentals of Data Engineering

Joe Reis, Matt Housley

Publisher Resources

ISBN: 9781118530801Purchase book