Lecture 2. Business Information Systems. Systems Analysis & Design Academic Year 2008/9. Objectives. By the end of this lecture you will Have examined the impact of Information technology on businesses Examined how Business uses Information systems
By the end of this lecture you will
These headlines offer a dramatic example of how IT affects Business.
Fig 1.1 Shelley Cashman et al Ch1 p2
Companies use information as a weapon in the battle to
Most companies treat information as a vital asset which must be:
Traditionally there were two alternative choices for a business:
Today the choice is much more complex
Today Companies have greater choice and new systems can be developed from the following:
More of these in later Lectures
The greatest risk occurs when a company tries to decide how the system will be implemented before determining what the system is supposed to do.
To avoid this we have to begin by outlining a company’s business needs and identifying possible solutions.
Each business situation is different
“A business model is a graphical representation of one or more business processes that a company performs” (a)
e.g. handling a sales order, or crediting a customer’s account.
(a) Shelley Cashman et al p8
“A business profile is an overview that describes a company’s overall functions, services, products, customers, suppliers, competitors, constraints and future direction” (b)
(b) Shelley Cashman et al p8
The following slide contains an example of a Business process model
3 Business Processes and a Result
Question: Does this show Business profile or Business process?
IT Managers often divide systems into categories
These categories are based upon the User group the system serves.
For this tutorial you need to find another student to work with.
If you were an A last week, then you need to find a B student and vice versa.
You can move to sit next to your new working partner. This will prevent your falling asleep!
“What typical business processes would this Organisation would want to perform?”
This is your chance to ask if you have correctly brainstormed or ‘gone off at a tangent’
Do not worry, you will get more brainstorming practice in our tutorials this term.
1. Transaction processing system
For example customer order processing, producing invoices and processing claims under warranty.
A simple transaction can require six tasks which the TPS
Processes as a group.
(e.g. Internet systems with Web pages, levels of data management software and web based database server)
You have now had the opportunity to:
Chapter 1 up to page 14 of the recommended text
‘Systems Analysis & Design’, Shelley Cashman Series, Thomson Course