I am a non-major who is new to big data. I happened to get SQLD and ADSP by chance, and I decided to try to get a big data analysis engineer while I was studying. However, I was afraid of having to do actual coding in the practical exam (I only know how to code Hello World..), so I looked for a lecture and found out about After Work Other Things. Thanks to the lecture that explained the program execution from the perspective of a non-major, I was able to study very easily. I passed the exam with a high score of 95 points in the first try through Inflearn lectures + Kaggle + Squid Game!! Highly recommended!!