OMG-OCUP2-ADV300 Exam - Topic 6 Question 42 Discussion

In UML, the bind relationship is used to specify that a class is a template instantiation of a template class, where actual parameters are bound to the formal parameters of the template class1. However, in the case of the relationship between a concrete class likeVectorand an abstract class likeAbstractList, the correct relationship should be Generalization, not bind.

Generalization is a taxonomic relationship between a more general classifier and a more specific classifier.Each instance of the specific classifier is also an instance of the general classifier1. Thus,Vectorbeing a concrete implementation ofAbstractList, should inherit fromAbstractList, which is correctly represented by a Generalization relationship in UML.

The other options can be evaluated as follows:

Option A:The upper limit for the size ofPhontyQueueis a design decision that should be based on the requirements and use cases of the application. It is not inherently incorrect in UML to have a specific upper limit.

Option C:The Generalization relationship is correctly used betweenPriorityQueueandAbstractQueueas it represents inheritance in UML.

Option D:While it is true that template parameters are typically defined at the top of the hierarchy, the statement is too absolute. In UML, template parameters can be added to specialized classes, but it depends on the specific design and requirements. Therefore, without additional context, this statement cannot be deemed universally valid.

In conclusion, the most applicable and valid review comment is option B, which correctly identifies the misuse of the bind relationship in the context of the class diagram provided.