1. Rapid Application Development (JAD)
Lesson 4
Rapid Application Development (JAD)

2. Outlines Overview of RAD Process in RAD User req. Approach/Fundamental
Stage in RAD

3. Overview of RAD Refers to a development life cycle designed
Faster development with higher quality systems
Iterative process

4. Overview of RAD Key objective; high speed, high quality, low cost
People-centered and incremental development approach
Active user involvement
System is tested & reviewed by both developers & user

5. Why RAD Replaces hand-design and coding processes
More capable process, faster and less error level than hand coding
Quality product in less time
Ensures greater customer satisfaction
End-users join

6. Why RAD
Each prototype is tested by those users and returned to the development team for reworking
Giving the users the opportunity to modify the requirements and review the resulting software implementation

7. Process in RAD Developing and refining the data models Process models
Prototype in parallel using an iterative process

8. User Req. in RAD Developed A solution is designed
The solution is prototyped
The prototype is reviewed
User input is provided
The process begins again

9. RAD Approach Compressed traditional approach to iterative process
Fig. 4.1:
Iterative process

10. Essential RAD Methodology People Management Tools Fig. 4.2:

11. Fundamental of RAD
Combining the best available techniques and specifying the sequence of tasks
Using evolutionary prototypes that are eventually transformed into the final product.
Using workshops, instead of interviews, to gather requirements and review design.

12. Fundamental of RAD
CASE tools to support modeling, prototyping and code reusability
Implementing time boxed development that allows development teams to quickly build the core of the system
Providing guidelines for success and describing drawback to avoid

13. Fundamental of RAD
Active user involvement throughout the RAD lifecycle
RAD techniques are also very successful when faced with unstable business requirements

14. Stages in RAD Four stages:- Requirements Planning User Design
Construction
Implementation

15. Stages in RAD Requirements Planning User Design
This stage defines the business functions and data subject areas that the system will support and determines the system’s scope
User Design
This stage uses workshops to model the system’s data and processes and to build a working prototype of critical system components

16. Stages in RAD Construction Implementation
This stage completes the construction of the physical application system, builds the conversion system, and develops user aids and implementation work plans
Implementation
This stage includes final user testing and training, data conversion, and the implementation of the application system

17. People Role in RAD
Involvement of people with the right skills and talents
People must thus be carefully selected, highly trained, and highly motivated
Able to use the tools and work together in teams.
Key players:-
Sponsor
User coordinator
Requirements planning team
User team design

18. People Role in RAD Key players:- User review board Traning manager
Project manager
Contstruction team
Workshop leader

19. Management Role in RAD
Management must pay careful attention to human motivation
Should target those professionals whom they deem as ‘Early Adapters.’
‘Early Adapters’ are those people who see the value of a new methodology and lead the way in making it practical to use

20. Tools in RAD
Computerized tools and human techniques to achieve the goals of high-speed and high quality
Examples of tools that can be used in RAD projects are CASE tools
CASE tools can be used to develop models(using eg UML diagrams) and directly generate code based on those models instead of hard coding

21. Tools in RAD Example tools Zoho Creator KiSSFLOW OutSystems Bizagi
Appian