DaemonCore Academy: Intro to SQL is a hands-on, offline SQL training studio built for beginners, developers, IT professionals, and aspiring data analysts. Learn by writing and executing real SQL against local SQLite databases. Work through 100 practical lessons covering queries, filtering, aggregation, relational design, transactions, JOINs, common table expressions, window functions, optimization, reporting, and production database practices. The course also explains when to use SQLite, Supabase, Firebase, managed PostgreSQL, or a self-hosted database.