Primary & Foreign Keys Explained | Power BI & Data Modeling Basics

In this video, you’ll clearly understand Primary and Foreign Keys, a core foundation of data modeling, databases, and Power BI relationships. We’ll explain how primary keys uniquely identify records, how foreign keys connect tables, and why defining keys correctly is critical for accurate reporting, correct totals, and reliable DAX calculations in Power BI. If your relationships break, filters don’t work, or totals look wrong, the issue is often missing or incorrect keys. 📌 What you’ll learn: What a Primary Key is What a Foreign Key is How tables connect using keys Real-world business examples Common key-related mistakes in Power BI #PowerBI #DataModeling #PrimaryKey #ForeignKey #SQLBasics #BusinessIntelligence #LearnPowerBI