Plan and build an offline class reservation web service using the Codex app. Implement and validate customer and admin screens, user registration and permissions, and application and approval rules, then deploy it and expand it into an Android app that uses the same accounts and data. Finally, add your own requirements directly. Test payments and iOS are separate expansion and optional phases.

Even if AI quickly generates an SQL draft, people must judge the table structure, relationships, performance, and data consistency. Using MySQL and DBeaver, you will gain hands-on experience with everything from tables, columns, data types, PKs, and FKs to DDL, database modeling, SQL fundamentals, indexes and EXPLAIN, and transactions, learning the standards for reading and validating AI-generated results.

I learned it the hard way, but I want you to learn it easily. I've discarded unnecessary theories and included only the core essentials of SQL. Build your SQL confidence quickly.