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?

To focus on the behavior of the objects that comprise the system Signup and view all the answers

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

They are subclasses of the same superclass Signup and view all the answers

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

getName(), getSize(), and findAverage() Signup and view all the answers

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

Enhanced data protection Signup and view all the answers

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

To identify the analysis classes of the system Signup and view all the answers

What is the primary purpose of UML?

To model software systems and provide a blueprint for development Signup and view all the answers

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

A structured class defines the class boundary via an encapsulation shell Signup and view all the answers

What is a characteristic of a structured class?

It can play multiple roles that vary on the objects that interact with it Signup and view all the answers

What is a benefit of an iterative development process?

It allows for testing and integration in every iteration Signup and view all the answers

What is the primary purpose of an interface?

To provide a clear purpose for the object Signup and view all the answers

What is the focus of the analysis phase?

Translating real-world concepts into solution-oriented objects Signup and view all the answers

What is a key benefit of using a structured class?

It provides a clear boundary between the class and its environment Signup and view all the answers

What is a characteristic of an iterative development process?

It allows for partial completion of selected use-case realizations Signup and view all the answers

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.