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Tuesday 9 April 2013

INFORMATION SYSTEM/ INFORMATION SYSTEM DEVELOPMENT


Hello guys,

Welcome to week 4 on the topic Information system, before we started the new topic, we recapped what we have learnt on ICT and IT.We discussed what is System and information system. System is a set of elements or components.it has Input, Processor, Output as the organization while IS made of Customer, Supplier and Stockholder. Information system on the other hand is the combination of hardware. Software, infrastructure, trained personnel and information technology used to facilitate planning, control, coordination and making decision in an organization. It has people, information and business as it organization.
INFORMATION SYSTEM: It is application of computer based information technology which is the combination of
Hardware, software, infrastructure, and trained personnel. We also learnt about types of information system which is TPS, DSS, ESS, MIS, and OAS.
Transaction processing system, Decision support system, management information system and office automation system. They are all information system used in most of organization in the world. The information system can be divided into two parts that are supporting business operation and support management DM.
The flow of information between management levels. The top manger make use of ESS (Expert support system) in their department to initiate things in organization in the form strategic, The middle manager make use of DSS and MIS(Decision support system and Management information system) in their department. The middle manager gets the information from TPS in order for them to make any decision. Low level also make use of TPS (Transaction processing system) is the first place where information is been generate for the effective run of the business.
We also learnt about TPS features, component, and it processing stage) as we all know TPS is connected to all levels of the company. MIS function, features, and it processing stage. The last DSS with it function, features. It helps me to have knowledge of all the information system that I mentioned above.
The last session of the day was ESS (Executive support system).It was designed to support high level of DM in an organization and it characteristics. ES(Expert system) is part of general categories of computer that fall under artificial intelligence which allow the computer to think,capture,store,and also allow it to make suggestion.
During that week we did group work which falls under information system. In the tutorial class we learnt how to references using the Microsoft word. This is some of what we did. 
   Interpersonal Communication. (2012, February 26). Retrieved March 14, 2013, from Wikipedia: http://en.wikipedia.org/wiki/Interpersonal_communication

Anderson, W. A. (1999). Sociology 2000. Boston: Boston.
Cole, A. (2012, April 11). The Changing Face of Information Technology. Retrieved March 14, 2013, from it business edge: http://www.itbusinessedge.com/cm/community/features/articles/blog/the-changing-face-of-information-technology/?cs=50198
Gower, C. (1999). Direction in conservation biology. Journal of animal ecology, 215-244.
Ismail, R. (2005, October). Desktop Publishing in Information Marketing. PC Magazines, pp. 21-23.
Jackson, M. (2011, June 21). Fattening Queer History: Where Does Fat History goes from here. (M. Jacob, Interviewer)
Man, E. V. (2000). Computer Viruses. New Jersey: Prentice Hall.
Sakiam, S. (2009, April 1-15). Living up to its names. Times, pp. 21-23.


INFORMATION SYSTEM DEVELOPMENT: It is the process of defining, designing, testing, and implementing a new software application or program. Apart from the ISD, we have ISDM which is the collection of procedure, techniques, tools and documentation aids which will help the system developers in their efforts to implement a new information system.

A Methodology is used to make the analysis and design process more accessible to non- expertsIt also introduce structure into design and make it more manageable.
There reason we initiate system Development is
When their existing problem with the system
Desire to introduce new system
Change in marketing or external environment
Merger or acquisition



We have participant in in the system development and system analyses, which consist of users, IT specialist, programmer, Manager, Stakeholders, external companies.
 
                Types of information system development Methodology
Gane sarsons (Stradis), prototyping/Iterative approach, structure approach (SDLC), information engineering(IE),soft system methodology, and ethics. 









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