Too Many SQL Joins? Fix It with Dimensional Modeling & Star Schemas

⚙️ Check out the brand new Data Modeling for Analytics Engineering course at Maven Analytics 👉 https://bit.ly/3SOUUe6 If every SQL query you write needs five joins just to answer a simple business question, you don't have a query problem, you have a data modeling problem. In this video, Maven Analytics instructor Alice Zhao breaks down why normalized databases are painful to query and how dimensional modeling fixes it for good. What you'll learn: 👉 Why normalized schemas require so many joins 👉 What fact tables and dimension tables are and how they work together 👉 How a star schema transforms a 5-table join into a single join 👉 The difference between a database that's painful to query and one that's a joy ⏱️ Timestamps: 00:00 – Why does every query need so many joins? 00:24 – What is a normalized schema? 01:28 – What is a star schema? 01:53 – Fact tables and dimension tables explained 02:15 – Answering the same question with one join 02:42 – Where to learn more Maven Analytics is an award-winning learning platform where individuals and teams build new skills, showcase work, and connect with experts around the world. We've helped 2M+ people build job-ready data literacy & AI skills, master tools like Excel, SQL, Power BI, Tableau and Python, and build the foundation for successful careers. Start building life-changing skills for FREE 👉 https://bit.ly/4wqhNCZ