Case Study about Information System Management Model
Summary: This Case Study 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. 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.
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. This Case Study 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 longterm research, in 2008. Overal cost-effective coefficients for the period from 2005 until the end f 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. Hypothesis H0 refers to a situation when the cost-effectiveness coefficient of the total business operation over th observed two years does not amount less than 1, when we take into account the data from financial reports ofthe observed company, i.e. profit-and-loss account.
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