Book Image

Microsoft Power BI Data Analyst Certification Guide

By : Orrin Edenfield, Edward Corcoran
5 (1)
Book Image

Microsoft Power BI Data Analyst Certification Guide

5 (1)
By: Orrin Edenfield, Edward Corcoran

Overview of this book

Microsoft Power BI enables organizations to create a data-driven culture with business intelligence for all. This guide to achieving the Microsoft Power BI Data Analyst Associate certification will help you take control of your organization's data and pass the exam with confidence. From getting started with Power BI to connecting to data sources, including files, databases, cloud services, and SaaS providers, to using Power BI’s built-in tools to build data models and produce visualizations, this book will walk you through everything from setup to preparing for the certification exam. Throughout the chapters, you'll get detailed explanations and learn how to analyze your data, prepare it for consumption by business users, and maintain an enterprise environment in a secure and efficient way. By the end of this book, you'll be able to create and maintain robust reports and dashboards, enabling you to manage a data-driven enterprise, and be ready to take the PL-300 exam with confidence.
Table of Contents (25 chapters)
1
Part 1 – Preparing the Data
6
Part 2 – Modeling the Data
11
Part 3 – Visualizing the Data
15
Part 4 – Analyzing the Data
18
Part 5 – Deploying and Maintaining Deliverables
21
Part 6 – Practice Exams

Query diagnostics

The query diagnostics tool that is built into Power Query allows us to see additional information related to each operation that Power Query performs. Many times, these Power Query operations will be data refreshes or when data is retrieved the first time; however, Power Query may perform other operations, such as retrieving a list of tables that can be used to source data. The information provided will provide more information on query steps, their duration, and other details that will allow you to understand which parts of the query take the longest time. Query diagnostics run in a trace fashion where the monitor needs to be started and stopped. When query diagnostics is running, it is recording the operations performed by Power Query to help you gain new insights.

There are two types of diagnostics that can be executed: step diagnostics and session diagnostics. Step diagnostics will provide details on only the selected step from a list of steps in the Query...