Database Systems Crash Course: 2 YouTube Lectures for Self-Study

Calvin is a computer science major student who registered for the database systems module this semester, but hasn't been attending most of the lectures. He's worried about failing the test and is now trying his best to self-study the content. To help him pass the final exam, here are two recommended lecture videos on database systems from YouTube:

'Introduction to Database Systems' by Prof. Jennifer Widom from Stanford University - This video covers the fundamental concepts of database systems including data models, relational algebra, SQL, and database design. It's a comprehensive lecture that provides a good overview of the subject.
'Database Systems Lecture 1' by Prof. Hector Garcia-Molina from Stanford University - This video is the first in a series of database systems lectures by Prof. Garcia-Molina. It covers the basics of database systems, including data models, relational algebra, and SQL. This lecture is more technical and detailed than the first one, but still a good option for review.

Both of these videos are around 1.5 hours long, so Calvin should be able to watch one of them and still have time to practice exercises. Good luck to Calvin on his studies!