Chaper 1 – What is an information system?
“Information science in the discipline that investigates the properties and behaviour or
information, the forces governing the flow of information and the means of processing
information for optimum accessibility and usability. It is concerned with the body of
knowledge relating to the origination, collection, organisation, storage, retrieval,
interpretation, transmission and utilisation of information.”
“Information systems are interrelated components working together to collect, process,
store and disseminate information to support decision making, coordination, control,
analysis and visualisation in an organisation”
The components of an information system are Technology (hardware, software, data,
networking communication), People and Processes.
People and processes are the components which change computer science to information
The roles of an information system:
An information system takes data, turns it into information and then into organisational
Mainframe (1970s) PC (personal use, still no graphical user interphase (GUI)) (1980s)
First popular GUI (1984)
WWW (World Wide Web)
Developed in 1989 by Sir Tim Berners-Lee
a global system of interconnected computer networks communicating according to
- World Wide Web
in this space documents and other web resources are identified by URLs and
interlinked by hyperlinks and can be accessed via the internet.
Not the same thing!!
Design of the WWW: two main features
1. Provide a way to make documents easily available to anyone on the internet
2. Provide a way for other people to easily access to documents via a web browser.
(2000-2009): Emergence of Web 2.0
Three major forces:
1. The growth of Web authoring styles that enables many people to collectively create
and maintain shared content.
2. The movement of people’s personal online data from their own computers to
services offered and hosted by large companies.
3. The growth of linking styles that emphasise online connections between people, not
just between documents.
Characteristics: Software gets better as people use it, the wisdom of crowds (Wikipedia), the
long tail (small amount hugely popular)