The Unified Modeling Language is one of the reliable general-purpose language used in software programming. In essence, the aim of the UML, fundamentally, is to standardize the visualization of a designed system (Brewton, Brunel, Moore, & Mosterman, 2019). The UML resembles the blueprint that is commonly used in the field of engineering. In other words, the UML is not a programming language, but a visual language.

In its diverse application, the UML is a relevant visualization language that can improve the overall performance of a system. In the given case study, the main task of the project is to extend the employee with territory class to accommodate data unique to a sales representation object. Incorporating the UML as an additional attribute and behavior in the class diagram can improve the display and visibility of the system.

Consistent with the need to include additional attributes and behavior in the system, enhancing a class diagram through the UML will play a key role in improving the overall performance of the system. The UML, with its static structure, will indicate classes within the system, respective attributes, methods (operations), as well as their actual relationship within the existing classes. Essentially, this will improve the clarity of the relationship between existing types of objects in a system, hence an enhanced perspective when coming up with a specification, conceptual, and development.

Typically, a class diagram comprises of names, attributes, and objectives. For the accurate and elaborate design of a class diagram involving sales representative, it is necessary to reconsider the existing operations and attributes and the overall impact when they interact with each other (Vyas, Vishwakarma, & Jha, 2016). Therefore, to improve the system in the case study, it is vital to include components such as names, addresses, types, as well as the values of properties. To give an illustration, the improvement of the system can entail the display and visibility of attributes as +, that represents open and public aspect, while # will represent secure and protected attribute, and – represent private attribute.