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

Introduction to Power Query Editor

In Power BI Desktop, Power Query is available within Power Query Editor. There are several ways to access Power Query Editor, outlined as follows:

  • Click the Transform data button from the Home tab, as illustrated in the following screenshot:

Figure 3.9 – Opening Power Query Editor from the ribbon in Power BI

  • We can navigate directly to a specific table query in Power Query Editor by right-clicking the desired table from the Fields pane then clicking Edit query, as shown in the following screenshot:

Figure 3.10 – Navigating directly to a specific underlying query in Power Query Editor

Power Query Editor has the following sections:

  1. The Ribbon bar
  2. The Queries pane
  3. The Query Settings pane
  4. The Data View pane
  5. The Status bar

    The following screenshot shows the preceding sections:

    Figure 3.11 – Sections of Power Query Editor

    In the next few sections...