UML

UML sequence diagrams are essential tools for visualizing the flow of interactions between objects in a system. They show how components work together over time to complete a task—such as processing an online order, authenticating a user, or handling a payment. These diagrams are part of the Unified Modeling Language (UML), a standardized modeling language...

1. Introduction In today’s globalized economy, efficient and transparent package delivery systems are critical to customer satisfaction, business success, and supply chain reliability. Companies like UPS, FedEx, and DHL manage millions of deliveries daily, relying on robust, real-time tracking and intelligent decision-making. To model such complex, event-driven workflows, UML Activity Diagrams provide a powerful and standardized approach. These diagrams go beyond simple flowcharts...