Moving down a lifeline means more time is passing. Create lifelines that represent the existence of an object or actor over time.In a sequence diagram, actors are represented by stick figures and objects are represented by rectangles.While creating a sequence diagram the first step is to identify all the objects that will participate in the system.It comes with specific shape libraries with sequence diagram notations and easy drag and drop functionality to visualize lifelines, actors and how they interact with each other. Creately’s sequence diagramming tool allows you to create detailed sequence diagrams.Sequence Diagrams are used to design, document, and validate the architecture, interface and logic of systems by describing the sequence of actions that need to be performed to complete a task. 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.More Templates What Is a Sequence Diagram?Ī sequence diagram is a UML diagram type that represents how and in what order objects in a system interact with each other.

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.

Sequence diagram online maker