Chapter 3_Unified Modeling Language (copy)

Unified Modeling Language

is a graphical language for modeling software systems.

Unified Modeling Language

is not a programming language.

Unified Modeling Language

It is a set of diagrams that can be used to specify, construct, visualize, and document software designs.

Unified Modeling Language

has diagrams to assist in every part of application development, from requirements gathering design, coding, testing, and deployment.

Unified Modeling Language

most commonly used modeling language.

early 1990s

UML was developed in the _____

Grady Booch, James Rumbaugh, and Ivar Jacobson

UML was developed by three leaders in object-modeling world

class diagram

is to depict the classes within a model.

UML class diagram

In an object-oriented application, classes have attributes (member variables), operations (member functions) and relationships with other classes. The _____ can depict all these things quite easily.

icon

fundamental element of the class diagram representing a class

-

private

+

public

#

protected

~

package

none

default

static

indicated underline in attribute or method

final

indicated by the word final in the identifier

abstract

indicated italic text for the abstract class, interface and an abstract keyword

metamodel

UML is unique in that it has a standard data representation. This representation is called the _____.

metamodel

is a description of UML in UML.

metamodel

It describes the objects, attributes, and relationships necessary to represent the concepts of UML within a software application.

Association

represents a relationship between two or more classes, showing that instances of one class are connected to instances of another class.

Aggregation

is a special type of association where one class contains or is composed of another class.

Aggregation

It is depicted using a diamond shape.

Composition

is a stronger form of aggregation where the child objects cannot exist independently of the parent object.

Composition

It is also depicted using a diamond shape, but with a solid line.

Dependency

represents a weaker form of relationship where one class relies on another class, but changes in the dependent class do not necessarily affect the independent class.

Inheritance

represents the "is-a" relationship between classes, where one class inherits the properties and behaviors of another class.

Realization

is a relationship that signifies the implementation of a contract (i.e., an interface) by a class.

Realization

It's often used to show that a class provides the actual implementation for the methods declared in an interface.

Realization

This is commonly referred to as "interface realization" or "class realization" in UML diagrams

Directed association

is used to indicate a unidirectional relationship between two classes.

Directed association

It implies that one class is aware of the other, but the reverse may not be true.

Directed association

This can be depicted using an arrowhead on the association line.