A-Level Computer Science – Relational Databases Explained (OCR / AQA) | S4:Ep2

This episode outlines fundamental database concepts, focusing on relational databases for computer science students. It defines essential terms such as flat files, entities, and attributes, while explaining key types like primary, foreign, and secondary keys. The text also covers relationships between entities including one-to-one, one-to-many, and many-to-many, illustrating how to represent these through entity-relationship diagrams. Finally, it demonstrates how tables or relations are structured to maintain referential integrity and manage data effectively within a database system.