Fig. 3.

Simple example of a Unified Modelling Language (UML) class diagram Class diagrams are static representations that describe the structure fo a system by showing the system’s classes and the relationships between them. Classes are represented as boxes with three sections: the first one contains the name of the class, the second one contains the attributes of the class and the third one contains the methods. Class diagrams also illustrate the relationships (and their multiplicity) between different classes. In this instance, a patient can be assigned to a single ward within a hospital whereas a ward can have multiple patients admitted at any time (depicted as 1..*)