Exam 7: Understanding More Complex Requirements Models With Generalizationspecialization and Whole-Part Hierarchies

A relationship can be optional.

Use cases and scenarios can be used to clarify system requirements.

A(n) __________ class exists only to allow subclasses to inherit from it.

In multiple inheritance, it is preferred to be able to trace superclasses back up the hierarchy to a common class.

Multiple inheritance occurs when objects in the class inherit attributes and services from multiple classes.

The symbol for a whole-part relationship is a _______________?

Which of the following is NOT true concerning whole-part hierarchies?

A(n) __________ hierarchy allows one class to inherit attributes and methods from another.

The terms aggregation and composition are used for __________ relationships in UML.

A _______ on the line indicates a whole-part relationship.

Which of the following is TRUE concerning generalization/specialization hierarchies?

A whole-part hierarchy allows one class to inherit attributes and methods from another.

_________________ occurs when the objects in a class inherit attributes and services form multiple classes.

A(n) ___________ hierarchy shows object relationships between an object in one class and objects in other classes that make up its "parts".

Sometimes a general class includes objects and is also specialized into subclasses that also include objects.

Which of the following is NOT described by scenarios?

The generalization/ specialization hierarchy shows a hierarchy of classes and subclasses that lead from the __________ to the __________.

Which of the following is TRUE concerning whole-part hierarchies?

The generalization/specialization hierarchy can lead to implementation problems if not composed of relatively stable or __________ classes.

A problem with generalization hierarchies is that they tend to increase redundancy in the model.