Why do I need a data model?
Do I need a data model for DAX?
Why do I need disconnected tables?

Well, if you have these questions then look no further. Power BI, a helpful tool for businesses, has three powerful things it can do: Data Modeling, DAX (a special kind of math), and Disconnected Tables. We call them the "3Ds."

This summary talks about why these three things are so important in Power BI. First, Data Modeling helps organize data, make it work faster, and connect different pieces. DAX is like a super calculator that helps you do hard math and make custom numbers. Disconnected Tables are like magic switches that let you look at data in different ways.

We'll show you how to use these 3Ds with examples and good tips. It's not too hard, and it can help businesses make better decisions and do well. So, whether you're new to Power BI or an expert, this summary will help you understand these cool tools and how they can help you get the most out of Power BI for better data insights.