Sequence Diagram

Sequence diagrams are a popular dynamic modeling solution. Dynamic modeling focuses on the the interactions occurring within the system. Sequence diagrams specifically focus on the "lifelines" of an object and how they communicate with other objects to perform a function before the lifeline ends.

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UML Sequence Diagram Example

sequence diagram example

This sequence diagram breaks down the system of creating a new event in a calendar and announcing it. A situation like this occurs any time you use Google Calendar to schedule a work meeting or a can't-miss appointment.

Popular Sequence Diagram Uses

Usage Scenario

A usage scenario is a diagram of how your system could potentially be used. It's a great way to make sure that you have worked through the logic of every usage scenario for the system.

Method Logic

Just as you might use a UML sequence diagram to explore the logic of a use case, you can use it to explore the logic of any function, procedure, or complex process.

Service Logic

If you consider a service to be a high-level method used by different clients, a sequence diagram is an ideal way to map that out.

Other UML Sequence Diagram Examples

Sequence Diagram Visio

Any sequence diagram that you create with Visio can also be uploaded into Lucidchart. Lucidchart supports .vsd and .vdx file import and is a great Microsoft Visio alternative. Almost all of the images you see in the UML section of this site were generated using Lucidchart.

Sequence Diagram Examples

Beyond the Sequence diagram examples noted above, there are many other commonly used diagram examples, such as:

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