2. Objectives
Explain the purpose and various phases of the traditional systems development life cycle (SDLC)
Explain when to use an adaptive approach to the SDLC in place of the more predictive traditional SDLC
Describe how the more adaptive Unified Process (UP) life cycle uses iterative and incremental development
Explain the differences between a model, a tool, a technique, and a methodology
Object-Oriented Analysis and Design with the Unified Process

3. Objectives (continued)
Describe the Unified Process as a comprehensive system development methodology that combines proven best practices with the iterative UP life cycle
Describe the disciplines used in a UP development project
Explain how automated tools are used in system development
Object-Oriented Analysis and Design with the Unified Process

4. The Systems Development Life Cycle
The entire process of building, deploying, using and updating an information system
Two approaches:
Predictive approach
Assumes the development project can be planned and organized in advance and the new information system can be developed according to the plan
Adaptive approach
Assumes the project cannot be planned out completely in advance but be modified as it progress, especially after some preliminary development work

5. SDLC phases and objectives
a) Traditional SDLC
SDLC Phases and Objectives
Object-Oriented Analysis and Design with the Unified Process

6. The Waterfall Approach to the SDLC
b) The waterfall approach
The Waterfall Approach to the SDLC
Object-Oriented Analysis and Design with the Unified Process

7. c) The overlap of system development activities
: Completion of major components of project
Object-Oriented Analysis and Design with the Unified Process

8. The Newer Adaptive Approaches to the SDLC
a) Spiral Model
The spiral model:
Cycles over and over again through development activities until a the project is complete
Iteration of system development activities
Iteration 1: SOME analysis, SOME design, SOME implementation
Iteration 2: MORE analysis, MORE design, MORE implementation
Iteration 3: EVEN MORE analysis, EVEN MORE design, EVEN MORE implementation
All above process should be repeated until the system is closer to what is ultimately needed
Object-Oriented Analysis and Design with the Unified Process

9. The Spiral Life Cycle Model
Object-Oriented Analysis and Design with the Unified Process

10. b) Related approach : Incremental Development
Completes parts of a system in several iterations and then puts them into operation for users
This process is continuously and finally we can complete the last part and integrate it with the rest
The object oriented approach is always described as highly iterative

11. The Unified Process Life Cycle
UP life cycle
Includes (4) phases which consist of iterations
Iterations are “mini-projects”
Inception: develop and refine system vision
Elaboration: define requirements and core architecture
Construction: continue design and implementation
Transition: move the system into operational mode
Object-Oriented Analysis and Design with the Unified Process

12. The Unified Process System Development Life Cycle
Object-Oriented Analysis and Design with the Unified Process

13. UP Phases and Objectives
Object-Oriented Analysis and Design with the Unified Process

14. Methodologies, Models, Tools and Techniques
Tools: Helps to create models or other components required in the project
CASE: Helps s system analyst complete development task
Object-Oriented Analysis and Design with the Unified Process

15. Some Models used in System Development
Object-Oriented Analysis and Design with the Unified Process

16. Some Techniques used in System Development
Technique: A collection of guidelines that help an analyst complete a system development activity or task
Object-Oriented Analysis and Design with the Unified Process

17. Relationships of Models, Tools, and Techniques in a System Development Methodology
Object-Oriented Analysis and Design with the Unified Process

18. The Unified Process as a System Development Methodology
UP: object-oriented system development methodology
Developed by Grady Booch, James Rumbaugh and Ivar Jacobson.
Object-Oriented Analysis and Design with the Unified Process

19. UP Life Cycle with Phases, Iterations, and Disciplines
Object-Oriented Analysis and Design with the Unified Process

20. The UP Disciplines Six main UP development disciplines Each iteration
Business modeling, requirements, design, implementation, testing, and deployment
Each iteration
Similar to a mini-project
Results in a completed portion of the system
Three additional support disciplines
Project management, configuration and change management, and environment
Object-Oriented Analysis and Design with the Unified Process

21. a) Business Modeling Purpose: understand business environment
Three major activities part of business modeling
Understand the business environments
Create the system vision
Create business models
Object-Oriented Analysis and Design with the Unified Process

22. b) Requirements Objective: document business requirements
Key drivers of activities: discovery and understanding
Requirements discipline and business modeling map to traditional systems analysis
Activities list
Gather detailed information
Define functional and nonfunctional requirements
Prioritize requirements
Develop user interface dialogs
Evaluate requirements with users
Object-Oriented Analysis and Design with the Unified Process

23. c) Design Objective: design system based on requirements
Six major activities in the design discipline
Design support services architecture and deployment environment
Design the software architecture
Design use case realizations
Design the database
Design the system and user interfaces
Design the system security and controls
Object-Oriented Analysis and Design with the Unified Process

24. d) Implementation Objective: build or acquire needed system components
Implementation activities
Build software components
Acquire software components
Integrate software components
Object-Oriented Analysis and Design with the Unified Process

25. e) Testing Testing is critical discipline Testing activities
Define and conduct unit testing
Define and conduct integration testing
Define and conduct usability testing
Define and conduct user acceptance testing
In UP, acceptance testing occurs throughout the building phase
Object-Oriented Analysis and Design with the Unified Process

26. f) Deployment Goal: conduct activities to make system operational
Deployment activities
Acquire hardware and system software
Package and install components
Train users
Convert and initialize data
Deployment activities prominent in transition phase
Object-Oriented Analysis and Design with the Unified Process

27. g) Project Management Most important support discipline
Project management activities
Finalize the system and project scope
Develop the project and iteration schedule
Identify project risks and confirm feasibility
Monitor and control the project’s plan
Monitor and control communications
Monitor and control risks and outstanding issues
Object-Oriented Analysis and Design with the Unified Process

28. h) Configuration and Change Management
Configuration and change discipline pertains to:
Requirements
Design
Source code
Executables
The two activities in this discipline
Develop change control procedures
Manage models and software components
Object-Oriented Analysis and Design with the Unified Process

29. i) Environment Development environment includes
Available facilities
Design of the workspace
Forums for team communication and interaction
Environment discipline activities
Select and configure the development tools
Tailor the UP development process
Provide technical support services
Object-Oriented Analysis and Design with the Unified Process

30. Tools to Support System Development
CASE (Computer Aided System Engineering)
Contains da atabase repository for information system
Set of tools that help analysts complete activities
Sample artifacts: models, automatically generated code
Object-Oriented Analysis and Design with the Unified Process

31. A CASE Tool Repository Contains All Information About the System
Object-Oriented Analysis and Design with the Unified Process

32. Tools to Support System Development (continued)
Microsoft Visio: emphasizes technical drawing
Rational Rose
CASE tool supporting object-oriented approach
Strongly identified with  UP methodology
Together
Pioneers round-trip engineering
synchronizes graphical models with generated program code
Leverages UML diagrams
Object-Oriented Analysis and Design with the Unified Process

33. Tools to Support System Development (continued)
Embarcadero Describe
Visual Modeling
Round-trip engineering
Rational XDE Professional
Integrates Microsoft Visual Studio.NET IDE
Also provides visual modeling and round-trip
Object-Oriented Analysis and Design with the Unified Process

34. Summary UP is an adaptive system development methodology
SDLC: set of activities required to complete system development project
Predictive SDLC: executes project in sequential phases (waterfall approach)
Adaptive SDLC: accommodates change and phase overlap
Spiral SDLC model introduces iterations (cycles)
UP is an adaptive system development methodology
Object-Oriented Analysis and Design with the Unified Process

35. Summary (continued)
UP life cycle includes four phases-inception, elaboration, construction, and transition
UP phases decomposed into one ore more iterations
Iterations involve work in nine UP disciplines
CASE: automation tools simplify development tasks
Object-Oriented Analysis and Design with the Unified Process