You're reading from Expert Data Modeling with Power BI, Second Edition Enrich and optimize your data models to get the best out of Power BI for reporting and business needs

Product type Paperback

Published in Apr 2023

Publisher Packt

ISBN-13 9781803246246

Length 698 pages

Edition 2nd Edition

Languages

DAX

Tools

Power BI

Concepts

Business Intelligence

Author (1):

Soheil Bakhshi

View More author details

Table of Contents (22) Chapters

Preface

1. Section I: Data Modeling in Power BI

2. Introduction to Data Modeling in Power BI FREE CHAPTER

3. Data Analysis eXpressions and Data Modeling

4. Section II: Data Preparation in Query Editor

5. Data Preparation in Power Query Editor

6. Getting Data from Various Sources

7. Common Data Preparation Steps

8. Star Schema Preparation in Power Query Editor

9. Data Preparation Common Best Practices

10. Section III: Data Modeling

11. Data Modeling Components

12. Star Schema and Data Modeling Common Best Practices

13. Section IV: Advanced Data Modeling

14. Advanced Data Modeling Techniques

15. Row-Level and Object-Level Security

16. Dealing with More Advanced Data Warehousing Concepts in Power BI

17. Introduction to Dataflows

18. DirectQuery Connections to Power BI Datasets and Analysis Services in Composite Models

19. New Options, Features, and DAX Functions

20. Other Books You May Enjoy

21. Index

Dealing with SCDs

The term slowly changing dimensions, or in short, SCD, is a data warehousing concept introduced by the amazing Ralph Kimball. You can learn more about Ralph Kimball here: https://www.kimballgroup.com/about-kimball-group/.

The SCD concept deals with moving a specific dataset from one state to another. Let us look at SCD in more detail with a scenario.

The Adventure Works organization has a human resources (HR) system in which its data is captured in the organization’s data warehouse. Stephen Jiang is a Sales Manager with 10 sales representatives on his team. The source for this scenario is the AdventureWorksDW2019 database, which you can download from here: https://learn.microsoft.com/en-us/sql/samples/adventureworks-install-configure?view=sql-server-ver16&WT.mc_id=DP-MVP-5003466.

The following image shows the sample data for our scenario: