The logical model looks like a tree and represents query operations like joins and calculations. Another compiler translates the details from your flow into a logical model that represents each part of your flow.A compiler validates that your flow doesn’t have errors, and if there are errors, exposes them to you in an understandable manner.There are several more layers behind the scenes: You can save your Prep Flow to a Tableau Prep flow (.tfl) file to use later, to share with others, or to run using Tableau Prep Conductor. This is what you see when you use Prep, and shows your connectors, a graph of your flow details, profiles of your column summaries, and row level details. The only layer that you’ll directly interact with is the visualization layer. Just like cakes have multiple layers, Prep has multiple software layers. Unlike Interactive Mode, Run Mode generates output data for analysis, and never samples input data. You’re in Run Mode when you run your flow ad hoc in Tableau Prep Builder, Tableau Cloud, or Tableau Server, or when you run a scheduled flow in Tableau Prep Conductor. At times, Prep may sample your data to ensure responsiveness, even when you’re working with large data sets. For example, if you join two tables together in a Join Step, you’ll see the final join result-down to the number of rows-immediately. Interactive Mode provides direct and interactive feedback as you clean, combine, and reshape your data. You’re in Interactive Mode when you’re authoring (creating or editing) a flow, like when you’re renaming columns in a Clean Step. There are two ways you can interact with Tableau Prep- Interactive Mode and Run Mode. Let’s dive into what happens behind the scenes, so that you can author and run your Prep flows with confidence. Prep flows start with at least one Input step on the left, transformation steps, like Clean steps in the middle, and at least one Output step on the right. With Prep, you create flows, which are visualizations of the transformations that you’re going to perform on your data. Tableau Prep is a data exploration and preparation tool that provides a visual, no-code way for you to derive insights, by allowing you to interactively explore, clean, and shape your data in real-time before analysis. Reference Materials Toggle sub-navigation.Teams and Organizations Toggle sub-navigation.Plans and Pricing Toggle sub-navigation.
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