UML Sequence Diagram
A UML sequence diagram is an interaction diagram that shows how processes operate with one another and in what order. UML sequence diagrams are used to show how objects interact in a given situation. An important characteristic of a sequence diagram is that time passes from top to bottom, that is to say, the interaction starts near the top of the diagram and ends at the bottom.
Much like the class diagram, developers typically think UML sequence diagrams were meant exclusively for them. However, an organization's business staff can find sequence diagrams useful to communicate how the business currently works by showing how various business objects interact. UML sequence diagrams are good at showing which objects communicate with which other objects; and what messages trigger those communications.
UML Sequence Diagram Software
With Edraw, you can easily create a professional UML sequence diagram to show object interactions arranged in time sequence. Edraw's interface is straightforward and the tools are easy to use. No professional drawing required. Simply drag and drop the pre-made objects from the library and add the contents. Then use smart connectors to illustrate the time sequence. Edraw greatly reduces the number of the mouse clicks, which is convenient and time-saving. When you finish a diagram, you can also export it to different formats, or print it out with only a single click.
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UML Sequence Diagram Symbols
Edraw software provides you plenty of special shapes and symbols used in the UML sequence diagram, object lifeline, lifeline, activate, activate (w/breake), interaction occurrence, frame occurrence, frame fragment, class, message, message return, etc.