A sequence fragment is represented as a box, called a combined fragment, which encloses a portion of the interactions within a sequence diagram The fragment operator (in the top left cornet) indicates the type of fragment Fragment types: ref, assert, loop, break, alt, opt, neg OperatorFragme...
Sequence diagrams describe interactions among classes in terms of an exchange of messages over time. They're also called event diagrams. A sequence diagram is a good way to visualize and validate various runtime scenarios. These can help to predict how a system will behave and to discover respo...
10.2The Sequence Diagram Asequence diagramrepresents an interaction. The complete diagram header for a sequence diagram is as follows: sd[interaction] interaction name [diagram name] The diagram kind for a sequence diagram issd.and the model element type can only beinteraction. ...
A sequence diagram is one of the multiple types of system interaction diagrams used within Unified Modeling Language (UML) to visually represent interactions between the objects that live within a system. Specifically, sequence diagrams provide a view of the order in which those interactions occur th...
Sequences are called "sequences" because the objects that they contain form a sequence. 让我们以图表的形式来看。 So let’s look at this as a diagram. 假设这是我们的序列,在这个例子中,序列中有一些不同的对象——三角形、正方形和圆形。 Imagine that this is our sequence, and we have a few...
A sequence diagram is an interaction diagram that emphasizes the time ordering of messages. – The sequence diagram consists of ? ? objects represented in the usual way messages represented as solid-line arrows ? time represented as a vertical progression Sequence Diagram UML2.0 Objects UML2.0 ?
Most of the time, you can think of the participants in an interaction diagram as objects, as indeed they were in UML 1. But in UML 2, their roles are much more complicated, and to explain it all fully is beyond this book. So I use the term participants, a word that isn’t used ...
I’ll then work through the logic with at least one more person, laying out classifiers across the top as I need them. I automatically add the object lifelines but as I indicated earlier will typically not invest time adding activation boxes. The heart of the diagram is in the messages, ...
You can use combined fragments (13) to define loops, branches and concurrent processing in a sequence diagram. Alternatively, consider using an activity diagram instead. The activity diagram is not as useful at showing messages between actors, but in some cases is better at showing...
Our approach consists of transforming the sequence diagram into a graph called Sequence Graph (SG) and transforming the activity diagram to the Activity Graph (AG). Henceforth, System Graph (SYG) is formed by integrating the two graphs i.e. SG and AG. The SYG is then traversed to form ...