#Staruml sequence diagram if condition how to

The cashier confirms the order and gives order details to the kitchen They go to the cash counter and place an order The following interactions take place during this sequence when a customer wants to place an order: Let's use the example of a fast-food restaurant's ordering system to understand how a sequence diagram works. In complex sequence diagrams, you can add Alternatives, Options, and Loops to represent different sequences. You can add multiple activation bars on the lifelines. Add action barsĪn activation bar is a thin rectangle that is placed under a lifeline to represent the time it takes to complete a task. 'Add to cart'-'Total'-'Confirm order') is the sequence. In online shopping, for example, the 'actor' is the customer, while the shopping system (e.g. Define your actorĪn actor is an external entity that interacts with the sequence but is not a part of that sequence. Seven different types of messages can be used in a sequence diagram. It is represented using a horizontal arrow. Create messagesĪ message is an interaction between the lifelines. Each lifeline is placed in a box at the top of the diagram with a vertical dashed line below it. There can be two or more lifelines in a sequence. Lifelines represent the roles or object instances that are interacting. Simply select the UML sequence diagram template and then follow these steps: 1. Miro also has its own template that you can customize to suit your needs. Miro is the perfect online sequence diagram tool to create your diagram from scratch and share it with your team.

#Staruml sequence diagram if condition how to

How to use the UML sequence diagram template

However, one of its primary use cases is in requirements documents for future systems implementation, so when staff or analysts design a new system, one or more sequence diagrams are used to showcase how this system will behave. Teams also use the sequence diagram to analyze existing work systems. The diagram for the second example does not necessarily need to have an 'actor.' In the first scenario, the customer is the 'actor' or external entity interacting with the diagram elements. Many use a system sequence diagram to map the customer journey through an eCommerce store or to get a high-level overview of specific business functions. A sequence diagram template is a tool that helps teams get a better overview of their work process, depicting object interaction in a system in sequential order.