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 OLS

In Chapter 11, Row-Level Security, we learned how to restrict data access for end users using RLS. In this section, we look at object-level security in Power BI. With OLS, we can hide the model objects based on the usernames and their roles, such as hiding an entire table or hiding some table columns for specific users. Therefore, if users use the Analyse in Excel feature to connect to a dataset, they can see only the tables and columns they have permission to see.


At the time of writing this book, OLS has just been released for public preview. Therefore, it is subject to change.

At the time of writing this book, we cannot create OLS within Power BI Desktop. Instead, we have to use Tabular Editor.

We cannot control the data's visibility to developers within Power BI Desktop with OLS or RLS. This is something that must happen within the source system. Regardless of whether OLS or RLS is in place or not, developers have access to all data available...