That application is a system that delivers an educational video to a user according to a selection made from a catalog of videos available for viewing. In this article, I go into the details of dynamic diagrams, and in another article, I explain static diagrams.Įach example diagram for this article represents a particular aspect of a hypothetical application called the Instructional Video Service. My introductory article answers essential questions like: What is UML? Why was UML created? Who created UML? and Why should you use UML? There are two basic types of UML diagrams: static and dynamic. Streamlining DevOps in hybrid, multi-cloud, on-premises, and edge environments.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. 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. The first necessary set of components are the objects. To accomplish these goals, you must first identify the components of your system that should be diagrammed. 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. Model how a complex procedure or system operates. You can accomplish several critical tasks with a sequence diagram.
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