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Expert Data Modeling with Power BI, Second Edition

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

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Product type Paperback
Published in Apr 2023
Publisher Packt
ISBN-13 9781803246246
Length 698 pages
Edition 2nd Edition
Languages
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Author (1):
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Soheil Bakhshi Soheil Bakhshi
Author Profile Icon Soheil Bakhshi
Soheil Bakhshi
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Table of Contents (22) Chapters Close

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

Introduction to composite models

In Chapter 4, Getting Data from Various Sources, we discussed different storage modes for a dataset. The following is a quick refresher on the datasets’ storage modes:

  • Import: For when we keep the data model in Power BI, and the whole data is cached in the memory. In this mode, all tables are in Import storage mode.
  • DirectQuery: For when we create a data model in Power BI, but the data is NOT cached in the memory. In this mode, all tables are in DirectQuery storage mode.
  • Connect Live: A specific type of DirectQuery, connecting to a semantic model, not a relational database (data store). When we use Connect Live, the data model is hosted elsewhere; therefore, we cannot make any changes to the data model. Instead, we can only get data ready from the data model.
  • Composite (Mixed): When a portion of data is cached in the memory while the rest is not. In this mode, some tables are in Import storage mode, and some tables...
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