Sequence Diagram Examples

This UML sequence diagram example shows the process of an online shopping transaction, involving the Customer, Shopping website, Payment gateway, and Shipping company.

The example project models a hospital management system using UML use case, class and sequence diagrams.

A UML sequence diagram example that shows the process of buying a drink by a customer and making it by a vending machine.

An example of a UML sequence diagram for a taxi booking system. It shows interactions between customers, taxi drivers, apps, and the taxi system server.

This example of a UML sequence diagram shows the behavior of a report generation system.

This examples shows a UML sequence diagram for a user feedback system.

An example of a UML sequence diagram for shopping cart processing. It shows the user manipulation with a shopping cart in an e-shop.

A UML sequence diagram for the user registration process. This example depicts how a user interacts with a sign-up form.

A UML sequence diagram example for a login module. It shows how a user login is handled by an authentication system.

An example of the sequence diagram for withdrawing money from ATM using 3 lifelines.

The executed commands may be stored in a stack to provide undo and redo functionality. These diagrams show the structure and behavior of a command stack.

Proper logs are essential for long-term system administration. A good logging module should be extensible, configurable and easy to use. This example model may be a good starting point for your solution. It allows you to dynamically change the outputs for the logs and log to multiple targets at once.