The steps involved in developing an information system are: analysis, feasibility study, system design, testing, implementation, and documentation. Analysis involves examining current information handling processes. The feasibility study determines if a system can be developed at a reasonable cost. System design covers inputs, outputs, data structure, hardware, and software requirements. Testing ensures the system works properly with normal and erroneous data. Implementation introduces the system, either directly or through parallel operation with the old system. Documentation includes user guides and technical specifications.

1. TOPIC :
Development of Information System
From:
Sowmya C N
Sowmya L
MLA ACADEMY OF HIGHER
LEARNING

2.  An information system is any organized system for
the collection, organization, storage and
communication of information. More specifically, it is
the study of complementary networks that people
and organizations use to collect, filter, process, create
and distribute data.
Information system

3. Steps :
Steps involved in developing
information system

4. The steps involved in developing an
Information System are:
1. Analysis
2. Feasibility Study
3. System Design
4. Testing
5. Implementation
6. Documentation

5.  This is a very important part in the development of
an Information System and involves looking at an
organization or system (such as a nursery school)
and finding out how information is being handled at
the moment.
Analysis

6.  The aim of a feasibility study is to see whether it is
possible to develop a system at a reasonable cost. At
the end of the feasibility study a decision is taken
whether to proceed or not. A feasibility study
contains the general requirements of the proposed
system.
Feasibility study

7.  The areas that need to be considered in the design
process are listed below:
1. Inputs
2 Outputs
3. File Design
4. Hardware
5. Software
Design

8.  To work out the inputs required for a system several
questions need to be addressed: What data needs to
be entered into the computer system?
 How much data needs to be input, and how often?
 Where does the data come from?
 How will the data be entered into the system?
Design - Inputs

9.  a) Details of the children looked after within the
nursery.
Design - Outputs
Some of the outputs for a system for a
nursery might be:
Name
Smith, Tony
Jackson, Jake
Timms, Tony
Fogett, Carol
Address
12 Fields Rd
9 Man Gdns
87 Colly Row
9 Shaw St
Telephone No.
0543 3445545
0563 9545752
0543 8653653
0563 9657564
Membership No.
001342
001234
001789
001455

10. Field Type Length Example
Membership No. Numeric 6 352600
Surname Text 20 McSweeney
First Name Text 15 Jane
Address line 1 Text 25 3 Longlane
Address line 2 Text 25 London
Post Code Alpha numeric 10 N1 1TH
Telephone No. Alpha numeric 10 0181-366-1234
Fees Paid Text 1 Y
Fee Date Date 8 22/04/97
Design - File Design

11. Design - Hardware
This section covers the types of computers and printers
thought suitable for the system being analysed. If the
system needs to be on a network, details would be
specified here.
Design – Software
A decision will have to be made as to what software to
use. The most common software packages are
databases, spreadsheets and word processing
packages.

12.  Any new system needs to be thoroughly tested before
being introduced. First of all the system should be tested
with normal data to see if it works correctly.
Secondly, the system is tested with data containing
known errors to try and make it fail ('crash').
Thirdly, the system is tested with very large amounts of
data to see how it can cope.
 It is important that processing time and response rates
remain acceptable with varying amounts of data
Testing

13. Implementing or introducing a new system can be
done in two ways:
1. Direct Implementation
2.Parallel Running
Implementation

14. • A number of documents are produced during the development of a
new computer application.
Essentially there are two types:
1.User Guides
2.Technical Documentation
Documentation