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)
1
Section 1: Data Modeling in Power BI
4
Section 2: Data Preparation in Query Editor
10
Section 3: Data Modeling
13
Section 4: Advanced Data Modeling

Understanding tables

From a data modeling perspective, tables are objects that contain related data values by using columns and rows. In Power BI, each query with Enable load activated (within Power Query Editor) presents a table in the data model layer.

Table properties

By clicking on a table from the Model view in Power BI Desktop, tables properties show up in the Properties pane, as shown in the following screenshot:

Figure 8.2 – Table properties pane in the Model view

Within the Properties pane, we can see the following settings:

  • General: Includes the following general table properties:

    a. Name: The name of the table. We can rename a table from here.

    b. Description: We can write some explanations about the table here. These explanations then show up in the Data view, as well as in the Report view, as shown in the following screenshot:

Figure 8.3 – The table description shows up in the Report view when...