Database Normalization Explained | Episode 3 – From ER Models to 3NF

In this episode, we explore how to move from an Entity-Relationship model to a well-structured relational schema. We explain what functional dependencies are and how to apply 1NF, 2NF, and 3NF to eliminate redundancy and update anomalies.

📌 What you’ll learn:
- Mapping ER diagrams to relational tables
- Functional dependencies and primary key rules
- Step-by-step normalization (1NF → 2NF → 3NF)
- Update anomalies and how normalization solves them
- Design trade-offs and tips

🧠 Use Case Example: A messy table with multiple values per field gets transformed into a clean, normalized schema.

📚 Further Reading & Resources:
🔗 :
https://circle.visual-paradigm.com/inventory-system/
https://www.geeksforgeeks.org/dbms/what-is-functional-dependency-in-dbms/
https://monday.com/blog/project-management/functional-dependencies-2/

Slides and Materials:
https://github.com/Cukowski/database-design-and-normalization-examples

🎓 Perfect for students prepping for exams, assignments, or DBMS interviews!

Видео Database Normalization Explained | Episode 3 – From ER Models to 3NF канала Dev w/Sel