Choose the correct answer:
What is true about the use of a Template Classifier to specify the Type of a Typed Element?
When a template classifier is used to specify the type of a typed element, the actual parameters for the template classifier's formal parameters must be provided by a set of bound elements. This means that for a template classifier to be used as a type, there must be a corresponding binding that specifies what elements are used as arguments for its template parameters. This allows the typed element to have a concrete type that is a specific instantiation of the template classifier with particular values for its template parameters. This use of template classifiers is described in the UML 2.x Superstructure Specification, which details how template binding works to create specific instances of template classifiers.
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What does a lower multiplicity of one for an end of an n-ary Association imply?
In UML, the multiplicity of an association end specifies how many instances of the class at that end can participate in a single association. A lower multiplicity of one (1) at one end of an n-ary (where n > 2) association implies that there must be at least one link that combines the values of the other ends, but it doesn't require that a link exists for every possible combination. Therefore, it's possible for some combinations to exist as links, while others do not, which is indicated by the option that links combining the values of the other ends may exist or may not exist. This interpretation is consistent with the definition of multiplicity in associations as outlined in the UML 2.x Superstructure Specification.
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A developer wants to make sure that each specialization of Class Bicycle has its own unique set of values for the suitable road surface and average speed
Which diagram imposes these requirements?
A)
B)
C)
D)
In Option C, the properties suitable road surface and average speed have been redefined in the subclasses Recumbent Bike and Racing Bike. The use of the {redefines} keyword in UML signifies that the subclass will provide its own specific values for these properties, overriding the general ones provided by the superclass Bicycle. This is the correct way to enforce that each specialization of Bicycle has a unique set of values for these attributes, as redefinition allows for the customization of inherited properties on a per-subclass basis. The use of {redefines} is specified in the UML 2.x Superstructure Specification, which describes how properties inherited from a superclass can be customized by subclasses.
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Which interpretation is valid when NamedElement A is the Supplier in a specialized Dependency having NamedElement B as the Client, and a Comment indicates that A and B participate in a transformation?
In UML, a Dependency is a relationship that signifies that one NamedElement, the client, depends on another NamedElement, the supplier, meaning that a change in the supplier could affect the client. If NamedElement A is the supplier and NamedElement B is the client in a Dependency relationship, and there is a Comment indicating that both participate in a transformation, the interpretation is that B (the client) depends on A (the supplier) for that transformation. The comment does not necessarily change the nature of the Dependency relationship; it simply adds additional information about the nature of their interaction. A transformation could mean that B transforms A's supplied element in some way, but in terms of UML Dependency relationships, it would still be interpreted as 'A depends on B' or 'B requires A for its transformation'. This interpretation aligns with the UML 2.x Infrastructure and Superstructure specifications, which explain Dependencies and their meanings within the UML metamodel.
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Consider the following diagram:
Which statement is correct about the diagram?
The diagram depicts Electronic Device Kind as a class that requires a set of Certifications (required : Certification[1..*]). This implies that any subclass of Electronic Device Kind must provide a set of required Certifications because the multiplicity [1..*] indicates that at least one Certification is mandatory for each instance of Electronic Device Kind or its subclasses. Therefore, when a subclass is created, it inherits the requirement to specify what Certifications are needed. This is a standard UML generalization, where the subclass inherits the attributes and constraints of its superclass. This interpretation is consistent with the rules defined in the UML 2.x Superstructure Specification, which includes the semantics of class generalization and attribute inheritance.
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