Information system

 The third topic was about information systems and the system methodology. In the first class of this topic our respective lecturer asked us about the basic knowledge about the information system. First, she asked students whether they had some concept about information system. Some of students explained it very well. After that she gave an overview about the information system. Information system is a combination of hardware, software and telecommunication networks that people build and use to collect create, distribute the data and information in an organization. In brief we can say information system is a software based solution used to analyse the information. Moreover, in information system, we have to monitor the IS module which is input-processing-output. Our lecturer was quite able to explain the types of information system. The five most important information systems are Transaction Processing System (TPS), Decision Support System (DSS), Expert System (ES), Management Information System (MIS) and Executive Support System (ESS).

After having the knowledge about the types of information systems we came to know where to use the information system in order to make the efficient use of each information system. In addition we also came to know the reason of using the information system in any business and organization. At first I was not familiar about the using of information systems but after having the class about the information system now I have clear concepts about the use of each information systems. The functions that information systems play in an organization are divided into two types. One is operation support system and another is management support system.

 Moreover, information in any organisation is divided into three sectors, such as strategic, tactical and operational. This information is used by the different level of job employee. I got knowledge about all three sectors and it was really interesting for me to know about this type of information. However, first sector is operational and it is used by the low level manager such as administrator, supervisor, clerk, and librarian and so on. They use this information system in order to collect the data. The second level of information is tactical and it is applied by the middle level manager and people use this information in marketing department, finance department and library department as well. And the last level of information is strategic information which is high level information and this information is used by the top level manager in an organization.

             After this, we have also learnt about the components of information system. There are six components of information systems such as procedure, hardware, software, database, telecommunication and people. These six parts are so important for the information system. If there is any part missing then it will effect on the whole information system as well.  During the next class our respective lecturer explained more about one of the most useful information system named transaction processing system (TPS). According to my awareness, transaction processing system is a computer based system which records all the data from every business operation throughout the whole department. Our lecturer also explained about the features of this system.

           In our next class our beloved lecturer explained about the system methodology which is the sub-topic of information system. In this class, our lecturer asked some questions about previous lecture to know our level of understanding. Then she started her lecture about system methodology. that is all about a conceptional model used in project management and it also describe all the stages used in the information system management. Then she provided some knowledge about six participants in system methodology such as project manager, stockholder, users, programmer, and system analyst and support personnel. In addition there are seven kinds of information system development methodology exists in the technological world among them three are most important. The most important three methodologies are SDLC, PROTOTYPING and STRADIS.             

To sum up, I really gained a lot of information as it was little bit new information for me and our lecturer tried her level best to make us understand this topic.

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