We've established that SQL is a useful programming language to know, and that the majority of databases you'll work with will have more than one table. As demonstrated in this section, we've been able to learn and apply concepts that connect together these tables in various ways. These table relationships are important to illustrate real-world data.
In this section we covered: The structure of a relational database as tables, how to associate data tables using a foreign key column, various tables with relations such as "one-to-one" and "many-to-many" and different types of joins. We can now distinguish the different types of relationships between data in a database.
With the ability to define relationships between different tables we can model data that is more accurate to the real world!