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Microsoft Power BI Quick Start Guide

You're reading from   Microsoft Power BI Quick Start Guide Bring your data to life through data modeling, visualization, digital storytelling, and more

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Product type Paperback
Published in Oct 2020
Publisher Packt
ISBN-13 9781800561571
Length 296 pages
Edition 2nd Edition
Languages
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Authors (4):
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Bradley Schacht Bradley Schacht
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Bradley Schacht
Devin Knight Devin Knight
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Devin Knight
Erin Ostrowsky Erin Ostrowsky
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Erin Ostrowsky
Mitchell Pearson Mitchell Pearson
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Mitchell Pearson
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Toc

Table of Contents (12) Chapters Close

Preface 1. Getting Started with Importing Data Options 2. Data Transformation Strategies FREE CHAPTER 3. Building the Data Model 4. Leveraging DAX 5. Visualizing Data 6. Digital Storytelling with Power BI 7. Using a Cloud Deployment with the Power BI Service 8. Data Cleansing in the Cloud with Dataflows 9. On-Premises Solutions with Power BI Report Server 10. Other Books You May Enjoy
11. Index

Live connection

The basic concept of live connection is very similar to that of DirectQuery. Just like DirectQuery, when you use a live connection, no data is actually imported into Power BI. Instead, your solution points directly to the underlying data source and leverages Power BI Desktop simply as a data visualization tool. So, if these two things are so similar, why give them different names? The answer is because even though the basic concept is the same, DirectQuery and live connection vary greatly.

One difference that should quickly be noticeable is the query performance experience. It was mentioned in a previous section that DirectQuery can often have poor performance, depending on the data source type. With live connection, you generally will not have any performance problem because it is only supported by the following types of data sources:

  • SQL Server Analysis Services database
  • Azure Analysis Services database
  • Power BI datasets

The...

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