Introduction to UML 1 Quick Tour Why do we model? What is the UML? Foundation elements Unifying concepts Language architecture Relation to other OMG technologies

Introduction to UML 2 Why model? Do engineers start building a bridge without blueprints?

Introduction to UML 3 Provide structure for problem solving Experiment to explore multiple solutions Furnish abstractions to manage complexity Reduce time-to-market for business problem solutions Decrease development costs Manage the risk of mistakes Some Answers

Introduction to UML 4 Why do we model graphically? Graphics reveal data. –Edward Tufte The Visual Display of Quantitative Information, 1983 –“A picture is worth a thousand words”

Introduction to UML 5 The UML is a graphical language for –specifying –visualizing –constructing –documenting the artifacts of software systems Added to the list of OMG adopted technologies in November 1997 as UML 1.1 Next minor revision was UML 1.3, adopted in November 1999 Next minor revision was UML 1.4 Next major revision was UML 2.0 Quick Tour

Introduction to UML 6 Define an easy-to-learn but semantically rich visual modeling language Unify the Booch, OMT, and Objectory modeling languages Include ideas from other modeling languages Incorporate industry best practices Address contemporary software development issues –scale, distribution, concurrency, executability, etc. Provide flexibility for applying different processes Enable model interchange and define repository interfaces UML Goals

Introduction to UML 7 OMG UML Contributors Aonix Colorado State University Computer Associates Concept Five Data Access EDS Enea Data Hewlett-Packard IBM I-Logix InLine Software Intellicorp Kabira Technologies Klasse Objecten Lockheed Martin Microsoft ObjecTime Oracle Ptech OAO Technology Solutions Rational Software Reich SAP Softeam Sterling Software Sun Taskon Telelogic Unisys …

©2007 · Georges Merx and Ronald J. NormanSlide 8 UML Grady Booch, Ivar Jacobson, and Jim Rumbaugh – historically and fondly known in the UML community as The Three Amigos – are often credited with the dominant contribution to the Unified Modeling Language

Slide 9 Rational® Rational Software Corporation, now a division of IBM® Corporation, is a dominant provider of Unified Process and UML technology, tools, and services UML is standardized by the Object Management Group – and

Slide 10 Learning Layout

©2007 · Georges Merx and Ronald J. NormanSlide 11 UML Diagram Types Behavior Diagrams –Illustrate the dynamic interactions between elements (over time) –Activity Diagram, State Machine Diagram, Use Case Diagram, and the four interaction diagrams Interaction Diagrams –A subset of behavior diagrams which emphasize object interactions –Communication Diagram, Interaction Overview Diagram, Sequence Diagram, and Timing Diagram Structure Diagrams –Show the static relationships between design elements, irrespective of time –Class Diagram, Composite Structure Diagram, Object Diagram, Component Diagram, Deployment Diagram, and Package Diagram

©2007 · Georges Merx and Ronald J. NormanSlide 12 Summary of UML Diagrams (1) Activity Diagram –Depicts high-level business processes, including data flow, or to model the logic of complex logic within a system Class Diagram –Shows a collection of static model elements such as classes and types, their contents, and their relationships Communication Diagram –Shows instances of classes, their interrelationships, and the message flow between them. Communication diagrams typically focus on the structural organization of objects that send and receive messages. Formerly called a Collaboration Diagram Component Diagram –Depicts the components that compose an application, system, or enterprise. The components, their interrelationships, interactions, and their public interfaces are depicted Composite Structure Diagram –Depicts the internal structure of a classifier (such as a class, component, or use case), including the interaction points of the classifier to other parts of the system Deployment Diagram –Shows the execution architecture of systems. This includes nodes, either hardware or software execution environments, as well as the middleware connecting them

©2007 · Georges Merx and Ronald J. NormanSlide 13 Summary of UML Diagrams (2) Interaction Overview Diagram –A variant of an activity diagram which overviews the control flow within a system or business process. Each node/activity within the diagram can represent another interaction diagram Object Diagram –Depicts objects and their relationships at a point in time, typically a special case of either a class diagram or a communication diagram Package Diagram –Shows how model elements are organized into packages as well as the dependencies between packages Sequence Diagram –Models the sequential logic, in effect the time ordering of messages between classifiers State Machine Diagrams – Behavioral and Protocol –Describes the states an object or interaction may be in, as well as the transitions between states. Formerly referred to as a state diagram, state chart diagram, or a state-transition diagram. A behavioral state machine examines the behavior of a class; a protocol state machine illustrates the dependencies among the different interfaces of a class Timing Diagram –Depicts the change in state or condition of a classifier instance or role over time. Typically used to show the change in state of an object over time in response to external events Use Case Diagram –Shows use cases, actors, and their interrelationships

©2007 · Georges Merx and Ronald J. NormanSlide 14 Sample Class Diagram

©2007 · Georges Merx and Ronald J. NormanSlide 15 Sample Object Diagram

©2007 · Georges Merx and Ronald J. NormanSlide 16 Sample Use Case Diagram

©2007 · Georges Merx and Ronald J. NormanSlide 17 Activity Diagram Notations

©2007 · Georges Merx and Ronald J. NormanSlide 18 Sample Activity Diagram

©2007 · Georges Merx and Ronald J. NormanSlide 19 Sample Sequence Diagram

©2007 · Georges Merx and Ronald J. NormanSlide 20 Sample Communication Diagram

©2007 · Georges Merx and Ronald J. NormanSlide 21 Sample State Machine Diagram

©2007 · Georges Merx and Ronald J. NormanSlide 22 Sample Deployment Diagram

©2007 · Georges Merx and Ronald J. NormanSlide 23