To all SQL learners: resources on relational database design

Question

I think SoloLearn's course on MySQL is great, but for those who may want to deep-dive into the topic, one should have a little background on Relational Database design. Here are some resources that I want to share with you:
- Relational Database design: https://www.ntu.edu.sg/home/ehchua/programming/sql/relational_database_design.html
- Introduction to database design: http://www.datanamic.com/support/lt-dez005-introduction-db-modeling.html
(continued)

Answer 1

thanks for the links

Answer 2

- Relational Databases for Dummies: https://code.tutsplus.com/tutorials/relational-databases-for-dummies--net-30244

These links include topics like: Entity-Relationship model, primary keys, foreign keys, etc.