This course provides a complete introduction to SQL and database systems based on the CS50 curriculum. It is designed to help learners understand how data is stored, organized, queried, and optimized in modern applications.

The course begins with an introduction to SQL and how databases are used to manage structured data. It then moves into querying, where students learn how to retrieve and manipulate data using SQL commands. The relational model is explained in detail, showing how tables are connected using keys and relationships.

Next, the course covers database design principles, helping learners understand how to structure databases efficiently. It also includes writing advanced SQL queries for filtering, joining, and analyzing data. Viewing data from different perspectives and creating structured outputs is also discussed.

The optimization section focuses on improving query performance and making databases faster and more efficient. Finally, the scaling concept explains how databases handle large amounts of data and high traffic systems in real-world applications.

By the end of this course, learners will have a strong understanding of SQL, database design, and performance optimization. It is ideal for computer science students, developers, and anyone interested in backend systems and data management.