What are Star Schemas in Power BI | Excel in BI Webinars скачать в хорошем качестве

What are Star Schemas in Power BI | Excel in BI Webinars

Excel in BI Webinars – Power BI Star Schemas Star schemas are one of the most important concepts in data warehousing and Power BI. In this session, I explain what a star schema is, why it matters for performance and clarity, and how you can build one step by step. We cover fact tables, dimension tables, relationships, and the benefits of clean data modelling. I also show a practical demo using a free tool that transforms flat tables into a star schema you can load into Power BI. What you’ll learn What a star schema is and why BI tools like Power BI rely on it The role of fact tables vs dimension tables How star schemas simplify queries and improve performance Why standardisation prevents duplicates and data errors How ETL (extract, transform, load) fits into data modelling Clean relationships: one-to-many, surrogate keys, and reusability Why flat tables cause performance issues in Power BI A demo of my free tool to convert flat files into star schemas Loading star schema tables into Power BI and building reports Writing simpler DAX formulas with a proper star schema Who this is for Power BI users and analysts struggling with slow dashboards Students and professionals learning data modelling basics Business users curious about why star schemas matter Anyone who wants to design scalable, reusable BI models Chapters 00:00 Welcome and intro 00:52 Why star schemas matter in BI 02:20 Data modelling and Kimball method 05:23 Benefits: performance, standardisation, easy exploration 10:00 Fact tables, dimension tables, relationships 15:51 DAX simplification with proper modelling 17:55 Problems with flat tables in Power BI 19:44 Demo: free tool to convert flat tables to star schema 23:46 Exporting tables to Excel or Parquet 26:25 Loading star schema into Power BI 27:30 Model view, one-to-many relationships 29:20 Example: building a report with star schema 33:00 Creating simple measures and filters 38:00 Wrap up and next steps Free webinars and resources Register for the next live session, micro-courses, and free guides 👉 https://www.excelinbi.com/webinars Work with us Need help with data pipelines or BI modelling? Book a discovery call 👉 https://www.excelinbi.com Contact 📧 contact@excelinbi.com #powerbi #StarSchema #DataModeling #BusinessIntelligence #DataAnalytics #SQL #ETL #DAX #DataWarehouse #ExcelinBI