Book Image

Microsoft Power BI Quick Start Guide. - Second Edition

By : Devin Knight, Mitchell Pearson, Bradley Schacht, Erin Ostrowsky
Book Image

Microsoft Power BI Quick Start Guide. - Second Edition

By: Devin Knight, Mitchell Pearson, Bradley Schacht, Erin Ostrowsky

Overview of this book

This revised edition has been fully updated to reflect the latest enhancements to Power BI. It includes a new chapter dedicated to dataflow, and covers all the essential concepts such as installation, designing effective data models, as well as building basic dashboards and visualizations to help you and your organization make better business decisions. You’ll learn how to obtain data from a variety of sources and clean it using Power BI Query Editor. You’ll then find out how you can design your data model to navigate and explore relationships within it and build DAX formulas to make your data easier to work with. Visualizing your data is a key element in this book, and you’ll get to grips rapidly with data visualization styles and enhanced digital storytelling techniques. In addition, you will acquire the skills to build your own dataflows, understand the Common Data Model, and automate data flow refreshes to eradicate data cleansing inefficiency. This guide will help you understand how to administer your organization's Power BI environment so that deployment can be made seamless, data refreshes can run properly, and security can be fully implemented. By the end of this Power BI book, you’ll have a better understanding of how to get the most out of Power BI to perform effective business intelligence.
Table of Contents (12 chapters)
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Building relationships

A relationship in Power BI simply defines how different tables are related to one another. For example, your customer table may be related to your sales table on the customer key column. You could argue that the building of relationships is the most important aspect of Power BI Desktop. It is this process, the building of relationships, that makes everything else work like magic in Power BI. The automatic filtering of visuals and reports, the ease with which you can author measures with Data Analysis Expressions (DAX), and the ability to quickly connect disparate data sources are all made possible through properly built relationships in the data model.

Sometimes, Power BI Desktop will create the relationships for you automatically. It is important to verify these auto-detected relationships to ensure accuracy.

There are a few characteristics of relationships that you should be aware of, which will be discussed in this section:

  • Auto-detected...