A complete SQL & Oracle Interview Course designed for Data Engineers, ETL Developers, DBAs, and SQL professionals — covering beginner to advanced SQL concepts including DDL, DML, JOINs, subqueries, CTEs, recursive queries, window functions, SCD Type 2, optimization techniques, real-world scenarios, and 300+ interview questions with detailed solutions. This guide helps you build strong database fundamentals while mastering Oracle and enterprise-level SQL interview challenges.