A class diagram for an e-commerce system shows various classes and their relationships responsible for handling internet-based markets. The user class includes information about users such as joining accounts or accessing them to log in. The products class shows what is on offer, therefore connecting up to a category class that lists these items according to similar features they depict. Customers’ requests are represented by the order class including its specification elements related to user and payment classes which take care of money transfers. The cart class indicates the basket we fill while doing our shopping whose contents may comprise products.
