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Extreme DAX

You're reading from   Extreme DAX Take your Power BI and Microsoft data analytics skills to the next level

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Product type Paperback
Published in Jan 2022
Publisher Packt
ISBN-13 9781801078511
Length 470 pages
Edition 1st Edition
Languages
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Authors (2):
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Henk Vlootman Henk Vlootman
Author Profile Icon Henk Vlootman
Henk Vlootman
Michiel Rozema Michiel Rozema
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Michiel Rozema
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Toc

Table of Contents (17) Chapters Close

Preface Part I: Introduction FREE CHAPTER
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 Other Books You May Enjoy
Index

Securing aggregation levels

Yet another element in securing a Power BI model is related to aggregation levels. There could be a policy like "salary costs may be viewed by team, but individual employees' salaries can only be viewed by their direct manager." In this section, we explore options to secure viewing results on different aggregation levels.

Measures cannot be secured, fact tables can

We've mentioned it already earlier in this chapter: implementing security through DAX in measures is not secure. You should always design your model with a possible self-service user in mind, who will be able to write her own measures against the model. Through these, any security feature of your hard-wrought measures can be circumvented.

Instead, security must rely on the model structure and RLS only. This means that not every security policy that you can think of can be implemented. For instance, your users could ask for sales by individuals, but sales margin...

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