3-era information system

Model of 3-era information system by Galliers & Somogyi

• Data Processing (DP) [efficiency]

Improved efficiency by means of automating back office data processing functions.

• Management Information Systems (MIS) [effectiveness]

Improved information flows and transfers.

• Strategic Information System (SIS) [competitiveness]

Enhance competitiveness of the organization through the application of IT to business processes.
Davenport’s point of view is that "Information is power and people are unlikely to give it away"

Reference:
http://web.ukonline.co.uk/david.baggaley/open/mba/ict/ict.htm
History of information system:
http://www.cs.tcd.ie/courses/ism/smis/topics/ism_hist/ism_hist.ppt
The role of IT in business:
www.itm.iit.edu/574/week2/Week2.ppt
Other site:
http://www.journal.au.edu/ijcim/sep98/article3.html