One of the powerful features of the Tabular data model is to extend the model by adding calculated columns and measures. Both objects are defined using DAX, but besides this similarity, they are entirely different beasts. Here you will find guidance when to use what!
Data modeling and understanding the physical layer are comparable with being a good driver and a good car mechanic. It's unnecessary to excel in both areas. Still, it helps tremendously when driving an F1 car through uncharted terrain if there is some understanding of how an F1 car works if repair becomes necessary.,
This article is about durations.
When we are looking at something like this: 2:00
We think, at least most of the people I know, an event that takes 2 hours.
But when we change the notation just a little to 2:00 AM, we think: Whoa, that’s early (or late, depending on the perspective, of course).
This blog is about one visualization task. In particular, this task is called part-to-whole. Effective visualizations will reveal the contribution of a single item to the whole, as Claus Dieter Wilke calls this in his book "Fundamentals of Data Visualization": "… visualizing proportions … as part of the total." and how this task can be solved using Power BI, now and even more important in the future.