In the user authentication process we describe, the messages show how a user enters information into the browser to gain access to the webpage and how the web browser will then cross-check credential to the designated application. What information is passed from one object to another? The other set of components you must identify are the messages the objects will send. This is adding the relationship that Circle and Rectangle will implement the IShape interface. The objects, sometimes called actors, are the principal players that perform tasks and send messages.įor example, in a login sequence, two of the objects would be the potential visitor or user and the login page a visitor uses to interact with the platform they’re attempting to log into. Make Circle and Rectangle implement IShape by selecting the 'Realization' arrow from the toolbox, clicking on Circle and dragging the line to IShape. The first necessary set of components are the objects. For cardinality, you can use double-quotes '' on each side of the relation. In Star UML if nothing initiates (triggers) the Execution Occurrence (thats the formal name of that rectangle) then. To accomplish these goals, you must first identify the components of your system that should be diagrammed. It is possible to add a label on the relation, using :, followed by the text of the label. Map out a real or hypothetical scenario that has many different components. See how objects and components interact with each other in sequence to complete a process. Adding text and numbers to designate your commands and the order in which they take place. Model how a complex procedure or system operates. Model the process flow by drawing lines between shapes. You can accomplish several critical tasks with a sequence diagram.
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