SQL and PostgreSQL: Database Design and Performance for Developers

Every modern application relies on a robust database to store, retrieve, and manage data. Understanding how to interact with and structure your database is a fundamental skill for any developer building scalable software. In this course, you will transition from writing basic queries to structuring production-ready PostgreSQL databases. You will understand how to model complex relationships, write high-performance SQL, and optimize query execution. Starting with foundational database concepts, you will gradually explore advanced techniques used by industry professionals to handle large-scale data. What you'll learn: - Understand foundational SQL syntax, relational database concepts, and PostgreSQL architecture. - Design efficient database schemas using normalization, primary keys, and foreign key relationships. - Write complex queries using joins, aggregations, subqueries, and window functions. - Optimize database performance using indexing strategies, query plans, and execution analysis. - Manage semi-structured data using modern PostgreSQL JSONB features and explore vector storage basics. - Practice database migrations and schema updates safely in a development workflow. The course begins with essential database definitions and core SQL commands before progressing to schema design and performance tuning. You will read clear explanations, analyze real-world scenarios, and complete practical written exercises to reinforce your skills. This course is designed for beginners with no prior database experience, as well as software developers looking to build a strong, practical foundation in SQL and PostgreSQL. Start building reliable, high-performance databases today.