About Uml Sequence Diagrams. UML guides the creation of multiple types of diagrams such as interaction structure and behaviour diagrams. Sequence diagrams are a type of Unified Modeling Language.
In this step-by-step tutorial well show you how to make a UML sequence diagram using Lucidchart. A dotted vertical line can express a message and lifelines can be illustrated by a vertical bar in UML. UML 2 Tutorial - Sequence Diagram Sequence Diagrams.
It is represented by a box called a combined fragment encloses a part of interaction inside a sequence diagram.
It is represented by a box called a combined fragment encloses a part of interaction inside a sequence diagram. A sequence diagram shows as parallel vertical lines lifelines different processes or objects that live simultaneously and as horizontal arrows the messages exchanged between them in the order in which they occur. They capture the interaction between objects in the context of a collaboration. Sequence fragments have been introduced by UML 20 which makes it quite easy for the creation and maintenance of an accurate sequence diagram.
