View Sequence Diagram Optional Flow PNG. Examine the uml sequence diagram, used primarily to show the interactions between objects in the sequential order that those interactions occur. Diagram describes a user registration process.
General sequence diagram for describing the flow of ... from www.researchgate.net An iteration expression consists of an iteration specifier and an optional iteration clause. Typically, you'll use one sequence diagram to specify a use case's main flow, and variations of that. The order in which these interactions take place.
In the attached image the marked message is optional, which means that he can go on with the registration process without filling in this info.
Both sequence diagrams and collaboration diagrams are kinds of interaction diagrams. Uml sequence diagrams model the flow of logic within your system in a visual manner, enabling you both the reason why they're called sequence diagrams should be obvious: It is advisable to generate a sequence diagram for every basic flow of every use case. You draw the deletion message as an arrow, with the title <>> (this is optional).
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