This chapter focuses on understanding how multiple tables work together
in a relational database.
In real applications, data is not stored in a single table.
Information is divided into multiple tables and connected using relationships.
Students will learn how to retrieve data from more than one table using SQL joins.
This chapter is one of the most important topics for backend development and is frequently asked in technical interviews.
After completing this chapter, students will be able to combine data from multiple tables and understand real database relationships.