A dashed line, known as a lifeline, represents events in an SSD. Within a SSD, this shape models the system as a black box (a system with inner workings that are not immediately visible).Īctors - shown by stick figures, actors are entities that interact with the system, and yet are external to it.Įvents - the system events that the actors generate in the sequence. Objects - this box shape with an underlined title represents a class, or object, in UML. Most elements we cover in use case diagrams remain in use throughout a system sequence diagram, including: Check 'UML' to enable all of the UML shape libraries or 'UML' to enable shapes specific to UML sequence. To the left of the editor, click 'Shapes' to open the Shape Library Manager. Use case diagrams are simply another diagram type which represents a user's interaction with the system. Just follow these steps: Open a blank document or start with a sequence diagram template from our templates gallery. Standard sequence diagrams show the progression of events over a certain amount of time, while system sequence diagrams go a step further and present sequences for specific use cases.
#SYSTEM SEQUENCE DIAGRAM SOFTWARE#
Sequence Diagrams are used mostly by software developers to note down and. This language provides a toolkit for diagram creators to make and read diagrams that are comprehensible regardless of location or industry. The diagram is used to depict the interaction between several objects in a system. Or if you have a file open already, click File > New. Drag shapes from the stencil onto the drawing canvas to build the diagram. System sequence diagrams, also known as SSD, are actually a sub-type of sequence diagrams, whose style and notation is dictated by the Unified Modeling Language. PlantUML sequence diagram syntax: You can have several kinds of participants (actors and others), arrows, notes, groups. Each of the use cases discovered in the analysis of the system will be realized by a sequence of operations. To build a sequence diagram, use a UML Sequence template or starter diagram, which includes the UML Sequence stencil.
0 kommentar(er)
