Book Image

Tableau Desktop Specialist Certification

By : Adam Mico
Book Image

Tableau Desktop Specialist Certification

By: Adam Mico

Overview of this book

The Tableau Desktop Specialist certification is fundamental for any data visualization professional who works in the field with Tableau. This book gets you started by covering the exam format, Tableau basics, and best practices for preparing data for analysis and visualization. It also builds on your knowledge of advanced Tableau topics to get you up to speed with the essential domains and domain objectives. Although the guide provides an outline and starting point to key in on what needs to be understood before the examination, it also delivers in context to give you a strong understanding of each piece before taking the exam. Instructions on how to get hands on with examples, a common data source, and suggested elements are also included. Understanding the concepts will not only assist you in passing the examination, but will also help you work effectively with the tool in your workspace. By the end of this book, you'll be able to efficiently prepare for the certification exam with the help of mock tests, detailed explanations, and expert advice from the author.
Table of Contents (17 chapters)
Part 1: Introduction to Tableau
Part 2: Mastering the Exam
Part 3: The Final Prep

Creating live data connections and extracts

We covered some data connection basics beginning in Chapter 2. In Tableau, data can be connected live or extracted. Before learning how to create these connections, it’s important to learn the benefits of each of them based on the separate features you look for when working with data connections.

Live versus extracted connections

Data can be connected live or static (or extracted). There are many considerations you need to consider with these connection types and how it impacts your needs and the performance of the workbooks. The following section will cover the major aspects of live versus extracted connections.

Data recency

Live connections mean the data flows into Tableau Desktop as soon as the source data is updated. With extracts, the extract needs to be refreshed to show updated data. The data freshness is fully dependent on when it was last updated or refreshed.

When the freshness of the data is vital, a live...