Conceptual Database Design: ERDs & Database Keys Explained (Part 3)

Welcome to Part 3 of our complete guide to Database Design! In this video, we move beyond architecture and dive straight into the Conceptual Design phase. If you have ever struggled with how to translate business rules into a working data model, this tutorial simplifies the entire process. We break down the fundamentals of Entity-Relationship Diagrams (ERDs) and provide clear, easy-to-understand examples of every database key you will need to know. What you will learn in this video: • How to correctly identify Entities and their Attributes. • How to map out Relationships between different entities in your system. • The exact differences between Candidate, Primary, and Alternate Keys. • How to use Composite Keys for complex data. • How Foreign Keys act as the glue that holds relational databases together. Video Chapters / Timestamps: • 01:27 - Introduction to Conceptual Database Design • 02:02 - Identifying Entities & Attributes • 05:09 - Understanding Relationships in ERDs • 07:45 - Introduction to Database Keys • 17:01 - Candidate Keys Explained • 19:00 - Primary Keys vs. Alternate Keys • 19:25 - Foreign Keys & Linking Tables • 20:34 - What is a Composite Key? • 22:53 - What’s Next in Part 4! Watch the Rest of the Series: • https://youtu.be/DzbEKKi8fQM?si=kWwHUvv9n6h80naC • https://youtu.be/D7EH_zxEfHk?si=AgJ3EvShYrimC2e0