# Understanding Data Modeling in PowerBI: Joins...

Introduction. Data Modeling is a good backbone of making Data Science and Analytics in PowerBI very successful. We are going to look into: Data modeling fundamentals. SQL Joins. PowerBI relationships. Facts vs deimension tables. Data schema. The big Question; WHAT is data modeling. Well Data modeling is the process of organizing and structuring data from multiple sources into a logical format for analysis. Here it is all about: The Table connection. Defining relationships. Structuring data into