A simple example of a real-world interaction that could be represented by a sequence diagram would be a user subscribing to an email service. Sequence diagrams can also be called event diagrams or event scenarios. A sequence diagram helps create an overview of how a system works and how all the different parts interact with each other over time, carry out the required actions, and how processes are completed. Both developers and users depend on these because they are a very straightforward way of modeling interactions between objects in a time sequence. One type of UML diagram is a sequence diagram. What is a sequence diagram in UML and what is its purpose? UML originates from the mid-1990s and has been evolving and changing ever since.

It was created to help software engineers and system designers better understand each other’s needs when cooperating on developing complex systems. UML is not a programming language, but a visual diagramming language that uses standardized models and diagrams to represent the design of the system. By installing the PlantUML as a VS Code extension, you can edit it right inside the VSCode software as in the example gif animation below.Developers often use the Unified Modelling Language (UML) when designing software. With this tool, you can create a wide variety of UMLs, from a simple flowcharts to a complex diagrams. It is an open-source tool and syntax for creating a UML diagram. So, instead of drawing manually, this short article introduces an alternative way by showing how to draw diagrams using plain text (Easy-to-Understand Script) with PlantUML ( ). Many online tools such as also allow you to draw the diagram but sometimes cause you much time to create a complex diagram. Some of you might draw this regularly on paper or use some software such as PWP or Adobe AI which causes you a headache sometimes if you are not an expert. In Data Science Project, UML Diagram is very essential to illustrate a conceptual model of your problem domains with the component- or class diagrams or to show how your machine and algorithm works with the sequence- or activity diagrams.

Editing PlantUML Sequence Diagrams in VSCode (by Author)

Sequence diagram online maker