Basic Concepts on how relational databases work. Explains the concepts of tables, key IDs, and relations at an introductory level. For more info on Crow's Feet Notation: http://www2.cs.uregina.ca/~bernatja/crowsfoot.html FOR INSTRUCTORS WHO ARE DOING ONLINE CLASSES: If there are other videos you need made please post a comment here. I will do what I can to help online education, especially during this time of challenges around the world. No charge (and no promises, so there is that). But I will do what I can.