Understanding Tableau's data-handling engine

Tableau's data-handling engine is usually not well comprehended by even advanced authors because it's not an overt part of day-to-day activities; however, for the author who wants to truly grasp how to ready data for Tableau, this understanding is indispensable. In this section, we will explore Tableau's data-handling engine and how it enables structured yet organic data mining processes in the enterprise.

To begin, let's clarify a term. The phrase Data-Handling Engine (DHE) in this context references how Tableau interfaces with and processes data. This interfacing and processing is comprised of three major parts: Connection, Metadata, and VizQL. Each part is described in detail in the following section. In other publications, Tableau's DHE may be referred to as a metadata model or the Tableau infrastructure. I've elected not to use either term because each is frequently defined differently in different contexts...