2. 1. System is computerised and may be out of
date -- > it needs replacing
2. Small company has a computer system but its
use if very limited + could be improved to
allow many more aspects of the business to
become computerised.
Scenario for Chapter 4
What is a scenario?

3. • Basically, it is just another name for a
situation.
• In the case of this course it is used so that
instead of just studying the theory of it, its
real life application can also be seen.

4. A Building Supply Company: Biashara Street
Building Supplies in Nairobi, Kenya.
This company buys the following things from big companies
and then sells them to smaller companies.
i. Bricks
ii. Cement
iii. Gravel
iv. Sand
v. Roof Tiles
It is run by two directors; Peter Kimanthi and Irene Kibaki. It
employs two secretaries, three sales people and two truck
drivers.

5. • This company has ONE computer and it has the following uses:
 Creating word-processed letters
 Sending emails
 Keep record of the company’s customers on a data base.
The role of the two secretaries:
1. Josephine:
i. deals with workers’ personal information
ii. Keeps the customer details
2. Mary:
i. Keeps information about number of hours worked
ii. Processes orders from the customers.
Irene is in-charge of paying the workers

6. • Peter and Irene believe that they could
increase the use of their computer.
• So they call in a systems analyst (Daniel) to
a) Look at how the computer is used
b) Advise them if their business would improve if
they increased the use of their computer.
What will Daniel do?

7. Why should you
analyse the
existing system? Analysis
Evaluation Design
Development
Documentation
and Testing
Implementation

8. • To see how the data flows around the system.
i. What the inputs are
ii. What the outputs are
iii. And what processing happens