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Actors are connected to use cases only byA. association relationship.B. dependency relationship.C. generalization relationship.D. inheritance relationship.E. realization relationship.
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- The incomplete coverage constraint for a generalization relationship means that:§ a superclass instance can be a member of one or more of the subclasses. [overlapping]§ some subclass instance is not a member of any superclass. [not possible]§ a superclass instance can be a member of at most one of the subclasses. [disjoint]§ each superclass instance is a member of some subclass. [complete]§ some superclass instance is not a member of any subclass.
- The Strategy design pattern is used to§ defer instantiation of a class to its subclasses.§ provide a placeholder for another object.§ decouple an abstraction from its implementation.§ restrict a class to have only one instance.§ encapsulate an interchangeable family of algorithms.
- In the Model-View-Controller (MVC) architectural pattern, the Model representsA. the objects used to render data in the user interface.B. the process control mechanism used by the system.C. the controls with which the user interacts.D. the data viewed and manipulated by the user.E. the business logic of the application.