Can you explain what is meant by a relational database?

A relational database is a database management system that stores data in the form of tables (relations). Each table consists of rows and columns, where rows represent records and columns represent attributes of these records. The main principles of the relational model include the use of keys to connect tables, data integrity, and the ability to perform queries using SQL.

For example, a "Users" table may contain columns "ID", "Name", "Email", and a "Orders" table may include "Order_ID", "User_ID", "Date". The connection between them is established through "User_ID".

This allows for efficient organization, storage, and retrieval of related data.