Choose the correct answer:
Can State Machine Events have Features?
State Machine Events in UML are triggers for transitions and do not classify as objects or classifiers; thus they do not inherently have features:
A . Incorrect, because State Machine Events are not treated as classifiers with features.
B . Incorrect, though it hints at an extended use case, State Machine Events do not extend classifiers in standard UML usage.
C . Correct, State Machine Events are not Classifiers and therefore cannot have features such as properties or operations.
D . Incorrect, because UML State Machines certainly have an Event concept, but these Events are not classified as having features.
UML Specification: State Machine chapter, specifically sections discussing the nature of events and triggers.
Further insights can be found in the event and trigger management sections of the UML 2.5 Documentation.
Choose the correct answer:
Consider the following diagram fragment:
Which diagram fragment correctly specifies task behavior based on task priority?
A)
B)
The correct answer is B, which uses a selection edge to specify task behavior based on task priority. In UML, an object flow with a selection property is used to select objects from a collection according to some criterion, which is typically represented by a Boolean expression. In the case of B, the selection criterion is described as 'ordering = the most important first', indicating that tasks are selected to be executed based on their priority.
UML 2.5 Specification: The UML 2.5 specification describes how selection behaviors can be applied to object flows to filter objects according to specific criteria, such as priority in this scenario.
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What does "computationally complete" mean in the context of fUML?
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