<aside> 💡 The slides for this lecture can be found here.



Abstraction is the process of representing essential features without including the background features.


Data is the foundation of an information system.

Relational Data Modelling

Relational Data Modelling is a classic form of modelling data in which every object and entity relates to each other using a set of rules and keys.


There are a few key parts of an ERD.

The different cardinalities.

The different cardinalities.