Topics : System and design Introduction. Various Approaches. Difference between Approaches. By G.PRAVEEN KUMAR MBA Department RVR&JC COLLEGE OF ENGINEERING,GUNTUR,AP

1. SYSTEM AND
DESIGN

2.  INTRODUCTION
 VARIOUS
APPROACHES

3. INTRODUCTION :System:A system can be defined as set of
elements arranged in an orderly
manner to accomplish an objective.
The
purpose of developing a new
system is complex data processing.
To
satisfy needs for Top
level, Middle level and lower level
people in the organisation.

4. Analyse Existing system:1)Careful study on Existing
system
2)Evaluating the system
(Technically , Economically and
operationally).
3)Compare old and new
system developed.

5. There are two types of
approaches
 Prototype Approach
 Life cycle Approach

6. 1)Prototype Approach :
It is the process progressively ascertaining
information needs, developing methodology
and ensuring that it satisfies the needs of the
users.
2) Life Cycle Approach : It is applied for small systems or independent
systems development like payroll basic
financial accounting,Finished goods
accounting,Dispatching and other processing
etc.

7. Prototype Approach

8. Mission and
Goals
Develop &
Test
Identify
information
needs
Refine
needs
Define system
boundaries and
scope
Modify the
Prototype
Define system
objectives
Develop revised
prototype
Documentation
NO
Training
Examine
feasibility
Develop
Initial
Is User
satisfied
Implement
in Parallel
Yes
Initial
Prototype
Develop the
application
Review

9. Life Cycle Approach

10. System
Application
Program
Specification
Assess
Feasibility
Develop
System
Information
Requirement
Install the
system
Conceptual
Design
Conduct
awareness and
training
Physical
Design
Operate the
system
System
Specification
Review of
Audit

11. Prototype Approach
Life cycle Approach
1)Open system with high degree of Closed system with little
uncertainty about the information
uncertainty about information
needs
needs
2)Necessary to try out the ideas
application and efficiency of
information
No need to try out the application
or information as it is already
proven
3)In prototype approach necessary
to control cost of design and
development, Experimentations
are necessary
Design and application are fully
determined with clarity,
experiments are not necessary
4)User want to try out the system
before he commits specification
The user is confident and confirm
the specification
5)The system and application is
custom oriented
System and application is universal
governed by principles and
practice