UML Class Diagrams Flashcards
16 Questions
103 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is an association in UML?

  • A line showing the relationship between two classes (correct)
  • A package used to group related classes
  • A holder for data representing the state of a class instance
  • A static diagram showing classes

    • What is an attribute in UML?

    A holder for data representing the state of an instance of a class.

    What does a class represent in UML?

    A representation of a 'thing' in the system, showing its attributes and operations.

    What is a class diagram?

    <p>A static, structural diagram in UML showing classes and their relationships.</p> Signup and view all the answers

    What is a default value in UML?

    <p>A value assigned to an attribute when no other value is defined.</p> Signup and view all the answers

    What is a derived attribute?

    <p>An attribute that is not stored but calculated from other attributes based on logic.</p> Signup and view all the answers

    What does multiplicity indicate in UML?

    <p>The number of instances of a class involved in a relationship or distinct values stored in an attribute.</p> Signup and view all the answers

    What is a note used for in a class diagram?

    <p>Useful information that doesn't fit elsewhere, shown in a rectangle connected to the relevant class.</p> Signup and view all the answers

    What does the term 'operation' refer to in UML?

    <p>Methods of a class.</p> Signup and view all the answers

    What is the purpose of a package in UML?

    <p>To group related classes.</p> Signup and view all the answers

    What is a parameter in UML?

    <p>A placeholder for a value passed to an operation.</p> Signup and view all the answers

    What does the private access modifier do?

    <p>Limits access to the same object only.</p> Signup and view all the answers

    What is a protected member in UML?

    <p>A member available to the object or instances of a child class.</p> Signup and view all the answers

    What does the public access modifier allow?

    <p>Any object to access the member.</p> Signup and view all the answers

    What is the public interface of a class?

    <p>All members with the public access modifier.</p> Signup and view all the answers

    What is a relationship pointer in UML?

    <p>A small arrow-like symbol showing the direction of the relationship.</p> Signup and view all the answers

    Study Notes

    UML Class Diagrams Fundamentals

    • Association: Line depicting the relationship between two classes with a name above it; arrows indicate directionality.
    • Attribute: A variable holding data representing the state of a class instance, also known as a member variable.
    • Class: Represents a "thing" in the system with its attributes and operations; serves as a blueprint for creating objects.
    • Class Diagram: A static, structural diagram in UML that illustrates classes and their interrelationships.
    • Default Value: A preset value for an attribute when no value is explicitly assigned; shown with an equal sign (=) followed by the value in a class diagram.
    • Derived Attribute: Not stored but calculated from other attributes; indicated with a forward slash ("/") preceding the name and accompanied by a logic description.
    • Multiplicity: Indicates the number of instances in a relationship or distinct values in an attribute; displayed near associations or in square brackets next to attribute names.

    Additional Elements in Class Diagrams

    • Note: Offers additional information about a class, shown in a rectangle connected to the relevant class with a solid line and featuring a clipped corner.
    • Operation: Refers to the methods associated with a class in UML.
    • Package: Groups related classes, equivalent to packages in Java and namespaces in .NET.

    Member Access Modifiers

    • Parameter: Placeholder for values passed to operations; defined by name, colon, and data type; multiple parameters are separated by commas.
    • Private Access: Restricts access to the class members only within the same object; indicated by a dash ("-").
    • Protected Access: Accessible to the object and child class instances; treated as private by other classes; denoted by a number sign ("#").
    • Public Access: Allows any object to access the member; methods should typically be public, while attributes should generally remain private; indicated by a plus sign ("+").
    • Public Interface: Comprises all public members, attributes, and operations of a class.

    Relationship Indications

    • Relationship Pointer: Arrow-like symbol representing the direction of relationships in association names, employing either the greater-than (">") or less-than ("<") symbols.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge on UML class diagrams with these flashcards. Cover key concepts such as association, attributes, and their definitions. Perfect for students and professionals looking to reinforce their understanding of class diagram terminology.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser