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

RLS implementation flow

Implementing RLS in Power BI always follows the same flow, which applies to all implementation approaches and all supported storage modes. We can implement RLS in the data model; therefore, the dataset's storage mode must be in Import mode, DirectQuery mode or Composite mode (Mixed mode). Once we have a data model, we have to go through the following flow:

  1. Creating security roles.
  2. Defining rules within the roles.
  3. Validating roles in Power BI Desktop.
  4. Publishing a report to the Power BI service or Power BI Report Server.
  5. Assigning members to roles within the service or Power BI Report Server.
  6. Validating roles in the Power BI service (role validation is not available in Power BI Report Server).

The following diagram illustrates the preceding flow:

Figure 11.9 – RLS implementation flow

In the next section, we look at different implementation approaches.