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

Working with connection modes

When we connect to a data source, the query connection mode falls into one of the following three different categories:

Data Import
DirectQuery
Connect Live

Every query connecting to one or more data sources in the Power Query Editor has one of the preceding connection modes, except Connect Live. When the connection mode is Connect Live, a Power BI model cannot currently connect to more than one instance of SSAS or AAS, or a Power BI dataset. As mentioned earlier, in December 2020, Microsoft released the preview of the new version of the composite models in which we can connect to multiple Power BI Datasets or AAS/SSAS tabular 2022 models when using the DirectQuery mode. We discuss composite models in more detail in Chapter 14, DirectQuery Connections to Power BI Datasets and Analysis Services in Composite Models.

This section looks at the connection modes, their applications, and their limitations.