1. Object Oriented Analysis and Design
Introduction to Object Oriented Concepts

2. Software development problems
Development of complex software systems
Represent real life entities in software
Development of software in a short time (productivity)
Reusable components
Developing extensible software for future changes

3. Software Development Methodology
A Software Development Methodology is a framework used to structure, plan, and control the software development process
Steps in software development process
Systems analysis, requirements definition
Systems design
Development
Integration and testing
Acceptance, installation, deployment
Maintenance

4. Methodology Approaches in System Development
Traditional Approach (Structured Approach)
Object Oriented Approach

5. Advantages of using Methodology Approaches
Clear understanding of the task ahead
Identify drawbacks earlier
Provide better estimates
Deliver stable systems
Allowing for sufficient time to make adjustments.
Keep the customer informed

6. Traditional Approach (Structured Approach)
Structured Analysis and Design Technique (SADT) is a software engineering methodology for describing systems as a hierarchy of functions.
SADT includes
Structured Analysis (E.g.:Data Flow Diagrams)
Structured Design(E.g.:Structure Chart)
Structured Programming (E.g.:Sequence, Selection, Iteration)

7. Object Oriented approach
It is an approach to system development that views information system as a collection of interacting objects that work together to accomplish task.
OOAD includes
Object Oriented Analysis
Object Oriented Design
Object Oriented Programming

8. Object Oriented Analysis and Design
Technical approach for analyzing and designing software applying the object-orientated concepts and visual modeling throughout the development life cycles to better stakeholder communication and product quality

9. Advantages of OOAD Simplicity Modularity (easy to partition)
Modifiability
Extensibility (easily upgraded)
Maintainability

10. Traditional Vs OOAD Category Traditional approach OOAD Approach
Overview
Software system viewed as a collection of programs
Similar things are grouped and categorized
Methodology
SDLC
Iterative/ Incremental
Analysis tools
DFD, Data dictionary, context diagrams
UML, Use cases, Context Diagrams
Focus on
Data and process
Objects
Analysis
Define the processors system need and define the data system store
Define the types of objects which do the work
programming
One start , one end, containing three programming constructs
Containing object types and messages between objects
Maintenance
Easy
Difficult

11. OOP languages
C++
JAVA
PHP
VB.NET