UML Package Diagram Quiz and Flashcards

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Questions and Answers

What is the primary trade-off in achieving storage efficiency by compressing data?

Reduced processing speed due to the overhead of compression

Longer processing time to compress and decompress the data (correct)

Decreased data integrity due to loss of information during compression

Increased storage space required for the compressed data

Which UML diagram is used to reflect the organization of packages and their elements?

Activity diagram

Package diagram (correct)

Sequence diagram

Class diagram

What is the primary purpose of using a package diagram to represent class elements?

To provide a visualization of the namespaces in the system (correct)

To depict the interactions between objects in a system

To model the behavior of individual classes

To show the inheritance relationships between classes

Which of the following is considered an impediment to speed efficiency in real-time applications?

Loops Signup and view all the answers

Which UML diagram type is used to model the structure of a software system's components and their relationships?

Component diagram Signup and view all the answers

Which of the following is a common trade-off in storing data in order of relative frequency to achieve storage efficiency?

Increased processing time to determine the location of data Signup and view all the answers

What is the main purpose of package diagrams in UML?

Organize use case diagrams and class diagrams Signup and view all the answers

How does a component diagram differ from a class diagram in UML?

Component diagrams have a higher level of abstraction Signup and view all the answers

In UML, what do activity diagrams display?

The sequence of activities Signup and view all the answers

Which UML element is primarily used to illustrate the pieces of software and embedded controllers that make up a system?

Component Diagrams Signup and view all the answers

What is the typical relationship between a component and classes in a component diagram?

A component is implemented by one or more classes at runtime Signup and view all the answers

What is the primary purpose of refactoring in software design?

To accommodate additional requirements Signup and view all the answers

Which of the following is NOT a type of UML diagram mentioned in the text?

Package diagram Signup and view all the answers

What is the purpose of using abstraction in software design?

To accommodate several classes with significant commonality Signup and view all the answers

What is the primary purpose of verifying input in software design?

To ensure environmental robustness Signup and view all the answers

What is the relationship between design and coding in software development?

The relationship depends on the nature of the task and the experience of the programmer Signup and view all the answers

What is the main purpose of using component diagrams in software design?

To model the physical components of a system Signup and view all the answers

Study Notes

Package Diagrams

Used to organize use case diagrams and class diagrams
Can be used to represent the organization of packages and their elements

Component Diagrams

Illustrate the pieces of software, embedded controllers, etc. that make up a system
Have a higher level of abstraction than Class Diagrams
A component can encompass a large portion of a system
Implemented by one or more classes (or objects) at runtime

Activity Diagrams

Used to display the sequence of activities
Show the workflow from a start point to the finish point
Detailing the many decision paths that exist in the progression of events contained in the activity

Design Principles

Speed Efficiency: critical for real-time applications
Impediments to speed efficiency include loops, remote operations, function calls, object creation
Storage Efficiency: attained by storing only needed data, compressing data, and storing in order of relative frequency
Profiler: an application that tracks resource usage during program execution

UML Diagrams

Types of UML diagrams include actor, relation among actors, classes, relations, package diagrams
UML diagrams are used to provide a visualization of namespaces

Refactoring

Refactoring: revising the design and implementation to accommodate additional requirements
Methods include promoting a primitive attribute to class, class selection, introducing abstract classes or interfaces
Refactoring is needed to accommodate increased scope

Verifying Input

Check all inputs for constraints including type verification, preconditions, invariants, postconditions
Initialize variables and objects at declaration/creation time to improve robustness

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Description

Learn about the most common use of package diagrams to organize use case and class diagrams, as well as the purpose and abstraction level of component diagrams in UML.

Package Diagrams and Component Diagrams in UML

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