Book Image

Expert Data Modeling with Power BI

By : Soheil Bakhshi
Book Image

Expert Data Modeling with Power BI

By: Soheil Bakhshi

Overview of this book

This book is a comprehensive guide to understanding the ins and outs of data modeling and how to create data models using Power BI confidently. You'll learn how to connect data from multiple sources, understand data, define and manage relationships between data, and shape data models to gain deep and detailed insights about your organization. In this book, you'll explore how to use data modeling and navigation techniques to define relationships and create a data model before defining new metrics and performing custom calculations using modeling features. As you advance through the chapters, the book will demonstrate how to create full-fledged data models, enabling you to create efficient data models and simpler DAX code with new data modeling features. With the help of examples, you'll discover how you can solve business challenges by building optimal data models and changing your existing data models to meet evolving business requirements. Finally, you'll learn how to use some new and advanced modeling features to enhance your data models to carry out a wide variety of complex tasks. By the end of this Power BI book, you'll have gained the skills you need to structure data coming from multiple sources in different ways to create optimized data models that support reporting and data analytics.
Table of Contents (18 chapters)
Section 1: Data Modeling in Power BI
Section 2: Data Preparation in Query Editor
Section 3: Data Modeling
Section 4: Advanced Data Modeling

Chapter 8: Data Modeling Components

In the previous chapter, we learned about some critical data preparation best practices such as loading a proportion of data, removing unnecessary columns, and summarization to optimize our data model size. We also learned about query folding and how it can affect our data modeling in Power BI. We also looked at data type conversion and discussed the importance of selecting certain data types, in order to keep our data model more optimized when we import the data into the data model. This brings us to this chapter. All our data preparation efforts pay off by having a cleaner data model that is easier to maintain and performs well. In this chapter, we'll look more closely at data modeling in Power BI by covering the following topics:

  • Data modeling in Power BI Desktop
  • Understanding tables
  • Understanding fields
  • Using relationships

In this chapter, we'll work on the Chapter 8, Data Modelling and Star Schema.pbix sample...