This Power BI tutorial guides you through data modeling, focusing on the star and snowflake schemas. You’ll learn how to import an Excel dataset containing sales and related tables into Power BI, and then build both types of data models in the Model view. The key difference is explained: star schemas connect all dimension tables directly to the central fact table, whereas snowflake schemas involve some dimensions connecting indirectly through other dimension tables. The tutorial demonstrates creating and editing table relationships, calculating a new sales amount column using the RELATED function, and finally, building a sample Power BI dashboard from the resulting snowflake schema, incorporating various visuals like pie charts, a map, and a line chart to analyze sales data across different dimensions and over time, along with basic visual formatting techniques.
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