UML and Object Oriented Programming

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Questions and Answers

What is the primary goal of translating functional requirements into software concepts?

  • To identify the analysis classes of the system (correct)
  • To develop a working prototype of the system
  • To create a detailed design document for the system
  • To design the user interface of the system

What is encapsulation, and what is its importance in object-oriented programming?

  • It places operations and attributes in the same object, and is important for data hiding
  • It allows other objects to change private operations and attributes of an object, and is important for flexibility
  • It prevents other objects from directly changing the attributes of an object, and is important for data protection (correct)
  • It describes the relationship between two subclasses, and is important for code reuse

What are analysis classes in the context of software development?

  • Early conjectures on the composition of the system that usually change over time
  • Incomplete classes that require a programmer to formalize operation signatures and attribute types
  • The classes inside a system's Business Object or Domain Model, in UML form (correct)
  • A prototype of a system's user interface, developed during the Analysis Phase

What is the role of an architect in creating an Analysis Model for a system?

<p>To focus on the behavior of the objects that comprise the system (C)</p> Signup and view all the answers

What is the relationship between the two classes described in the problem?

<p>They are subclasses of the same superclass (A)</p> Signup and view all the answers

Which operations are most likely contained in the superclass of the two classes?

<p>getName(), getSize(), and findAverage() (C)</p> Signup and view all the answers

What is the primary benefit of encapsulation in object-oriented programming?

<p>Enhanced data protection (B)</p> Signup and view all the answers

What is the purpose of creating an Analysis Model in software development?

<p>To identify the analysis classes of the system (B)</p> Signup and view all the answers

What is the primary purpose of UML?

<p>To model software systems and provide a blueprint for development (A)</p> Signup and view all the answers

What is a key difference between a traditional class and a structured class?

<p>A structured class defines the class boundary via an encapsulation shell (D)</p> Signup and view all the answers

What is a characteristic of a structured class?

<p>It can play multiple roles that vary on the objects that interact with it (C)</p> Signup and view all the answers

What is a benefit of an iterative development process?

<p>It allows for testing and integration in every iteration (C)</p> Signup and view all the answers

What is the primary purpose of an interface?

<p>To provide a clear purpose for the object (C)</p> Signup and view all the answers

What is the focus of the analysis phase?

<p>Translating real-world concepts into solution-oriented objects (D)</p> Signup and view all the answers

What is a key benefit of using a structured class?

<p>It provides a clear boundary between the class and its environment (C)</p> Signup and view all the answers

What is a characteristic of an iterative development process?

<p>It allows for partial completion of selected use-case realizations (C)</p> Signup and view all the answers

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Study Notes

UML and Classes

  • UML is a modeling language for software blueprints.
  • Structured classes differ from traditional classes in that they:
    • Clearly define class boundaries via encapsulation shells
    • Bring public interfaces into the class via ports
    • Show the role that the class plays
  • A structured class can play multiple roles that vary depending on the objects that interact with it.
  • A characteristic of a structured class is that it can play multiple roles.

Iterative Development Process

  • In an iterative development process, testing and integration take place in every iteration.
  • An iteration focuses on partial completion of selected use-case realizations.
  • Iterative development encourages user feedback in later iterations.

Interfaces

  • An interface should have a clear purpose.
  • An interface should not include all possible methods, but rather only those that are necessary.
  • Classes may have multiple interfaces depending on the purpose of each interface it implements.

Analysis

  • The focus of analysis is translating real-world concepts into solution-oriented objects.
  • Analysis classes are early conjectures on the composition of the system that usually change over time, rarely surviving intact into implementation.

Encapsulation

  • Encapsulation is important because it prevents other objects from directly changing the attributes of an object.
  • Encapsulation describes the bundling of operations and attributes within an object.

Inheritance

  • When comparing two classes that share the same superclass, the operations that are most likely contained in the superclass are those that are common to both classes.
  • Inheritance allows for the creation of a superclass that contains shared operations.

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