It is a great help in understanding DB.

It's great because it feels like an appendix book that gathers only the essentials, especially when there is a lack of organized materials related to CS.

I like it

It's easy to understand

I purchased the entire CS technical interview curriculum and am currently taking the Operating Systems course, and it is truly helpful because it covers only the core essentials! Although I knew about operating systems, I found it difficult to explain for myself "what an operating system is or what a server is," but through this lecture, I feel I have properly understood the core concepts and can now explain them on my own.