Which is the type of message in UML diagrams?
A found message is a message that does not have a known sender but has a receiver. A lost message can occur when a message is sent to an element outside the scope of the UML diagram. An asynchronous message is the only message type for which you can individually move the sending and receiving points.
What are the key components in a sequence diagram?
The following nodes and edges are typically drawn in a UML sequence diagram: lifeline, execution specification, message, combined fragment, interaction use, state invariant, continuation, destruction occurrence. Major elements of the sequence diagram are shown on the picture below.
What does parameter mean in UML sequence diagram?
Microsoft’s texts on UML sequence diagrams defer the subject of discussion of parameters to UML class diagrams (and of course, in class diagrams the term parameter means formal parameter as there are no actuals in class diagrams).
What are the arguments of a UML message?
Arguments of a message could only be: attributes of the class owning the interaction. A message is shown as a line from the sender message end to the receiver message end. The line must be such that every line fragment is either horizontal or downwards when traversed from send event to receive event.
What are message occurrence and destruction occurrence in UML?
Message occurrence (complete UML name – message occurrence specification ) is an occurrence which represents such events as sending and receiving of signals or invoking or receiving of operation calls. Destruction occurrence is a message occurrence which represents the destruction of the instance described by the lifeline .
Which is the best description of a sequence diagram?
Sequence diagram describes an interaction by focusing on the sequence of messages that are exchanged, along with their corresponding occurrence specifications on the lifelines.