learning UML (Unified Modeling Language) for free

learning  UML (Unified Modeling Language) for free

Story:

yWhat UML is for

ySome of the main diagrams are and what you use them for

xClass diagrams and class forms

xUse Case Diagrams

xSequence (Event) Diagram

xState Diagrams

zDeveloped by the “Three Amigos”: Grady Booch, Jim Rumbaugh, Ivar Jacobson

yEach had their own development methodology

yMore or less emphasis on notation and process

zUML is a notation and a process

yDiagrams and notation from UML 1.3 Definition 

Diagrams

zClass diagrams: Represents static structure

zUse case diagrams: Sequence of actions a system performs to yield an observable result to an actor

zSequence diagrams:Shows how groups of objects interact in some behavior

zState diagrams: Describes behavior of system by describing states of an object

Class Diagrams

zBetter name: “Static structure diagram”

yDoesn’t describe temporal aspects

yDoesn’t describe individual objects: Only the overall structure of the system

zThere are “object diagrams” where the boxes represent instances

yBut rarely used—other diagrams serve the role of describing object interaction better

yWhen used, object diagrams describe static structure, like a data structure

Notation in Class Boxes

zAbstract classes (and operations) in italics

z+ is public, - is private, # is protected

zCan also specify stereotypes or compartments

y“constructors” or “query”

y“controller”....

learning  UML (Unified Modeling Language) for free