1 What is DAX? Flashcards
What does DAX stand for?
Data Analysis Expressions
What is the primary purpose of DAX?
Enables complex calculations and derives new insights from data models
What are the key applications of DAX?
- Creating calculated columns
- Creating calculated measures
What is a calculated column in DAX?
Extends tables with new data derived from existing columns
What is a calculated measure in DAX?
Generates single values (aggregations, metrics) for visualizations, without adding new columns
What type of language is DAX considered?
Functional language
How are DAX expressions evaluated?
From the innermost function outward
What components does DAX consist of?
- Functions
- Operators
- Constants
What data types does DAX support?
- Numeric
- Text
- Date
- Boolean
What is crucial for writing valid DAX expressions?
Understanding DAX syntax
What are the two types of context in DAX calculations?
- Row context
- Filter context
True or False: DAX provides functions for error handling.
True
Why is performance important when writing DAX formulas?
For optimal report performance
What features does the DAX editor in Power BI Desktop provide?
- IntelliSense
- Syntax highlighting
- Formula validation
Fill in the blank: DAX consists of functions, operators, and _______.
Constants
What resources does Microsoft provide for learning DAX?
Extensive documentation, tutorials, and online resources
What is the significance of understanding context in DAX?
It influences the result of calculations
What allows users to manage potential errors in DAX formulas?
Error handling functions
