Case Study: an Information System Management Model

1 case study : an Information System Management Model Vladimir imovi Matija Varga Predrag Ore ki Article Info: Management Information Systems, Vol. 7 (2012), No. 1, pp. 013-024 Received 28 December 2011 Accepted 24 January 2012 UDC 007:005]:004 Summary This article presents the purchase Management Information System , finance Management Information System and security Information System , their interdependence and tight correlation. Furthermore, we state the goals of the purchase Management Information System that must be achieved in any organisation, as the purchase (sub)process is carried out in every organisation.

2 P-K matrix gives a detailed presentation of a public organisation, and data classes and sub-processes within the observed organisation. Other companies involved in similar activities can perform their processes in accordance with the presented business technology matrix. The business technology matrix was used for designing a data flow process diagram comprising data flow, warehouses, processes and the external entity which can also be used in such companies. The article also deals with the duration of the sub-processes. The duration of sub-processes must be reduced as much as possible in order to achieve the planned result at the process output point.

3 A hypothesis was set in the article, for the period from the beginning of 2009 until the end of 2010. We observed whether the total cost-effectives coefficient in the company would fall under the threshold value of 1. The article has proven that, based on the sample (profit-and-loss account), there is no reason to discard the H0 hypothesis, as the company s total cost-effectiveness coefficient did not fall below the permitted value of 1 for two years. The third section of the article presents the possible threat to organisations Information systems, and describes methods of protecting electronic Information in processes, and recovering electronic databases in finance Management Information systems.

4 Keywords purchase Management Information System , finance Management and security Information System , P-K matrix, data flow diagram, financial report analysis, cost-effectiveness indicators 1. Introduction Along with support in decision-making, the managerial Information System serves as support to managers when making decisions. Decisions are frequently made in the purchase Information System , based on Information from the finance Information System . More often than not, relevant Information required in the purchase process are gathered from financial reports.

5 This article presents cost effectiveness over a period of five years in the financial report analysis process, to that the hypothesis was set at the outset of the long-term research, in 2008. Overal cost-effective coefficients for the period from 2005 until the end of 2008 were known, so that they were not taken into consideration when setting the hypothesis. The hypothesis was set for the period from the beginning of 2009 until December 31, 2010. H0 denotes null hypothesis, whereas H1 is the mark for the alternative hypothesis.

6 Hypothesis H0 refers to a situation when the cost-effectiveness coefficient of the total business operation over the observed two years does not amount less than 1, when we take into account the data from financial reports of the observed company, profit-and-loss account. H1 is the mark for the alternative hypothesis when the total cost-effectiveness coefficient is under the threshold value of 1. The article has proved that, based on the sample (profit-and-loss account) There is no reason to discard hypothesis H0, the total cost-effectiveness coefficient has not fallen below the tolerated threshold of 1.

7 All the relevant Information used by managers for making key decision ougth to be protected, whether they are in digital or analog form. Aims and Tasks The aim of this article is to describe the manner of functioning of the Information systems for managing purchases, finance and security in an organisation, and their interconnectedness. These systems are essential for efficient functioning of any organisation type, regardless of property type. The basic task of the purchase Management Information System is to obtain all the Information required for acquiring resources and other capital goods in organisations following appropriate criteria.

8 Just-in-time (JIT) Information enables Vladimir imovi , Matija Varga, Predrag Ore ki 14 Management Information Systems Vol. 7, 1/2012, pp. 013-024 generating profit within purchase sub-processes. The additional tasks of the acquisition process include cost-cutting when purchasing resources and capital goods, thus enabling efficient operation of the entire System . The article demonstrated possible threats to the organisation s Information systems, ways of protecting the Information and retrieval of electronic data in the finance Management Information System .

9 Within the finance Management Information System , the article will demonstrate a decision making support System , and indicators for measuring the progress flow in the Information Management Information System . These three Information System were taken into consideration due to the fact that are highly significant for overall Management and administration, and because the purchase Management is of key importance for seamless process flow in organisations. The Information System is essential for recording events and changes in business, and analysing financial reports.

10 The security Management Information System takes care of he protection of relevant and reliable Information , and protection of electronic Information of importance for the organisation. Employed Research Methods The research methods employed here inlude: case study , modelling (data flow diagram and business technology matrix), interview, measurement (determining the exact time), statistical methods (indexes), observation, perception, analysis (content analysis, business System analysis and other indicator System ), which will be used for determining business objects, processes, events, Information , documents and Information System protection measures.