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

Organizing the model

There are usually several roles involved in a Power BI project in real-world enterprise BI scenarios. From a Power BI development perspective, we might have data modelers, report writers, quality assurance specialists, support specialists, and so on. The data modelers are the ones who make the data model available for all other content creators, such as report writers. So, it is essential to make a model that is as organized as possible. In this section, we look at several ways to organize our data models.

Hiding insignificant model objects

One of the essential ways to keep our model tidier is to hide all insignificant objects from the data model. In many cases, we have some objects in the data model that are not used anywhere else. However, we cannot remove them from the data model as we may require them in the future. So, the best practice is to hide all those objects unless they are going to serve a business requirement. In the following few sections,...