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Extreme DAX

You're reading from Extreme DAX

Product type Book

Published in Jan 2022

Publisher Packt

ISBN-13 9781801078511

Pages 470 pages

Edition 1st Edition

Languages

Concepts

Business Intelligence

Authors (2):

Michiel Rozema

Henk Vlootman

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Table of Contents (17) Chapters

Preface

Part I: Introduction

1.1 DAX in Business Intelligence

1.2 Model Design

1.3 Using DAX

1.4 Context and Filtering

Part II: Business cases

2.1 Security with DAX

2.2 Dynamically Changing Visualizations

2.3 Alternative Calendars

2.4 Working with AutoExist

2.5 Intercompany Business

2.6 Exploring the Future: Forecasting and Future Values

2.7 Inventory Analysis

2.8 Personnel Planning

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Index

Effective model design

The concepts of relationships and filter propagation enable powerful analytics in Power BI models. It is important to think about the design of a model: which tables should the model contain, and which columns need to be in those tables? Which relationships are needed? In short, what is the overall structure of the model? The choices you make in model design will determine what results the model will be able to deliver.

Star schemas and snowflakes

A best practice for analytics using relational databases is to work with a specific database structure, known as a star schema. The basic ideas of star schemas apply to Power BI models as well.

Figure 1.2.12: Generic star schema structure

The central tables in a star schema model are the fact tables. These tables contain things that have happened, will happen, or should happen; like sales transactions, financial ledger transactions, customer inquiries, student enrollments, sales opportunities...

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Authors (2)

Michiel Rozema

Michiel Rozema is one of the world's top Power BI experts, living in the Netherlands. He holds a master's degree in mathematics and has worked in the IT industry for over 25 years as a consultant and manager. Michiel was the data insight lead at Microsoft Netherlands for 8 years, during which time he launched Power BI in the country. He is the author of two Dutch books on Power Pivot and Power BI. Michiel is one of the founders of the Dutch Power BI user group and the organizer of the Power BI Summer School, and has been a speaker at many conferences on Power BI. He has been awarded the Microsoft MVP award since 2019 and, together with fellow MVP Henk Vlootman, runs the consultancy company Quanto, specialists in Power BI.

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Henk Vlootman

Henk Vlootman is a senior global Power Platform, Power BI, and Excel business consultant. Every year since 2013, Henk has received the Microsoft MVP award for his outstanding expertise and community leadership. Henk is one of founders of the Dutch Power BI user group and the organizer of the Power BI Summer School, and has been a speaker at many conferences on Power BI all over the world. He is also the author of two Excel and two Power Pivot / Power BI books. He started his career in 1992 with his own company, then as an Excel consultant. Nowadays he runs the consultancy company Quanto, specialists in Power BI, together with fellow MVP Michiel Rozema.

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