Question on training

[jdballard30]

In this training/learning, it says "One of Power BI's strengths is that you don't need to flatten your data into a single table. Instead, you can use multiple tables from multiple sources and define the relationship between them." Is that to make it easier for non-developer types to build something in Power BI? Is flattening a good idea in Power BI?

[amitchandak]

If it not already flattened, then one should not.  There are many formulas which work better in star schema

Also, refer :

https://docs.microsoft.com/en-us/power-bi/guidance/