[Lv0] Just 2 Hours! SQL/DB Core Concepts Crash Course

"I know I need to study SQL, but I don't know where to start." When you open a database book, terms like normalization, B-Tree, and clusters... it's daunting right from the start. This course strips away all those complex theories and includes only what you truly need. Where are KakaoTalk messages stored? Why is the MapleStory trade window secure? Starting with everyday examples like these, you can grasp the entire flow of SQL in just 2 hours by coding along through installation → creating tables → CRUD → JOIN → and indexes.