IS & IS Methodology

Assalamualaikum....


Hai!!Long time I didn't update my blog. Today I'm back to write about Information System(IS).For me, this topic is the most difficult than other topic. For this topic I have to remember and understand all the system and I very weak in memorizing.


IS is the application of computer based on Information Technology that used to facilitate planning, control, coordination and decision making in organization. There are 5 components of IS. The first one is hardware. It is a computer equipment that used to perform input, processing and output activities. The second one is software. The third one is database. The forth one is people who manage, run, and maintain the system. The last one is procedures. It is a policies, methods and rules for using computer information system.



There are 5 types of information system. The first one is Transaction Processing System (TPS). It is a backbone of an organization's information system and used by operational and supervisory. It used to collect, store and process data from business transaction. The second one is Decision Support System (DSS). It used to support unstructured program. It mainly for tactical manager.



The third one is Expert Support System.( ESS). It used by top manager. The forth one is Management Information Sytem (MIS). It used by middle manager to produce report with fixed and standard formats.
The last type of IS is Office Automation  System (OAS). It used to collect, process and store data and information in the form of electronic office communication.


System Developer will use ISD methodologies in helping them implement a new system.  ISD methodologies is a collection of tools, technique or documentation. There are 7 types of ISD methodologies. There are STRADIS, IE, Photocopying, SDLC, SSM and Ethics.


But seriously I said, until now I don't remember the types, and what the uses of ISD methodologies. I hope I can remember and understand this topic before final exam.