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Level 1 — DAX Foundations+50 XP
Lesson 1
1. What is DAX?
Understand Data Analysis Expressions and the functional nature of DAX.
The Concept
DAX is not a programming language like Python or C#; it is a formula language designed for tabular models and in-memory aggregation.
Example DAX:
// DAX calculates values on the fly without storing results in the table Total Revenue = SUM(Sales[Revenue])
DAX formulas are evaluated in memory when a user interacts with a report visual, slicer, or filter. You write expressions, not procedural step-by-step algorithms.
Try It Yourself
Write a measure named 'Total Sales' that sums the Revenue column in the Sales table.
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