In which diagram time flows vertically?
Sequence Diagrams
Sequence Diagrams are time focus and they show the order of the interaction visually by using the vertical axis of the diagram to represent time what messages are sent and when.
What does the execution occurrence mean?
Execution occurrence (complete UML name – execution occurrence specification) is an occurrence which represents moments in time at which actions or behaviors start or finish.
What is a sequence diagram Java?
A sequence diagram simply depicts interaction between objects in a sequential order i.e. the order in which these interactions take place. We can also use the terms event diagrams or event scenarios to refer to a sequence diagram. Sequence diagrams describe how and in what order the objects in a system function.
What is a sequence diagram used for why would an analyst choose a sequence diagram over a communication diagram?
Sequence diagrams are used to represent message flow from one object to another object. Sequence diagrams are easier to maintain. Sequence diagrams are easier to generate. Sequence diagrams can be easily updated according to the changes within a system.
What is true about a sequence diagram?
A sequence diagram is a type of interaction diagram because it describes how—and in what order—a group of objects works together. These diagrams are used by software developers and business professionals to understand requirements for a new system or to document an existing process.
What does time mean in a sequence diagram?
Time in a sequence diagram is all a about ordering, not duration. The vertical space in an interaction diagram is not relevant for the duration of the interaction. Sequence Diagram is an interaction diagram that details how operations are carried out — what messages are sent and when.
How are sequence diagrams used in a collaboration?
They capture the interaction between objects in the context of a collaboration. Sequence Diagrams are time focus and they show the order of the interaction visually by using the vertical axis of the diagram to represent time what messages are sent and when.
How is a fragment represented in a sequence diagram?
A sequence fragment is represented as a box that frames a section of interactions between objects (as shown in the examples below) in a sequence diagram. It is used to show complex interactions such as alternative flows and loops in a more structured way. On the top left corner of the fragment sits an operator.
How to make a sequence diagram in illustrator?
It shows the messages that pass between participants and objects in the system, and the order in which they occur. To build a sequence diagram, use a UML Sequence template or starter diagram, which includes the UML Sequence stencil. Drag shapes from the stencil onto the drawing canvas to build the diagram.