UML Class Diagram for Online Shopping System

A UML (Unified Modeling Language) class diagram for an e-commerce system. The diagram includes various classes with attributes and relationships indicative of an online shopping platform. The "Customer" class, with attributes like customer ID, name, and email, has an optional one-to-many relationship with the "CreditCard" class, suggesting that a customer can have multiple credit cards. The "Customer" class also has a one-to-many relationship with the "Address" class, indicating that a customer can have multiple addresses. Central to the diagram is the "Order Table" class, which aggregates data from the "Shopping Cart" and "Item" classes and is associated with the "Store" class. The "Order Table" contains methods such as "CreateOrder," "CancelOrder," and "UpdateOrder," which operate on the "Shopping Cart" and are influenced by the customer and store involved. The "Item" class is linked to the "Store," suggesting that various items are associated with different stores. Each item has a unique ID, name, price, and a store ID indicating its origin. The "Shopping Cart" class holds a cart ID and customer ID, implying a relationship where each shopping cart is uniquely associated with a customer. The "CreditCard" class is crucial for transactions, with attributes like card number, expiry date, and CVV for security purposes. This class diagram efficiently captures the essential elements and operations of an e-commerce transaction system, detailing the interconnections between users, payment methods, orders, and items available across different store locations.