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Techniki strukturalne jako narzędzia modelowania systemów informacyjnych zarządzania

Kopczewski M., Darnowski F.

Zarządzanie Przedsiębiorstwem

2007

Vol. 10, nr 1

2-12

In today's world, big companies, small business and even a single man to maintain his position need to use informatics systems effectively. The success depends on effectiveness and reliability of used systems and organization that uses them. Every organization can posses informatics system in two different ways: by creating the system from beginning or by buying one. In both cases there's no chance of success without user. The user contribution is different in each phases of development, nevertheless its good to make user participating in the process from the beginning. In this paper I assume that defining users informatics needs and creating logic model are the phases of analysis of informatics system. Result of mine analysis is identification of users informatics needs in following structures: - functional - function and purpose of the system, its connection with other systems - informative - input and output data and relation between them - technical - software and hardware Analysis is a necessary stage of creation of Informatics Systems of Management, deciding of correctness of future system. In my paper I will show: 1. Methods and purpose of analysis of informatics system. 2. Structural techniques of modeling informatics system in aspect of: - analysis of informatics' needs of users, - modeling system functions, - modeling system processes, - modeling data. 3. Results of using structuring analysis techniques Every system need to be analyzed during design phase. Success of analysis depends on following elements: - participation of competent people, - complete recognition of users needs, finding situation strange and atypical, - use of established standards and notation in specification of system model, - correctness check of the model by users of the system Analysis is source of 56% of all errors in informatics systems which create 82% of all errors costs. These facts force programmers and users to intensive work on improving systems analysis.

Informational systems designing and implementation

Radic M.

Journal of Achievements in Materials and Manufacturing Engineering

2006

Vol. 18, nr 1-2

307--310

Purpose: Problems which are likely manifest themselves in the course of implementation cannot be envisaged at the design stage of an informational system without employing the approach presented in this paper. Design/methodology/approach: All the procedures as well as all the processes need to be located through application of both analysis and synthesis; a through dismembering to the most plain constituent element to be made followed by reintegration the same into a whole of mutually connected elements. The quest of a method providing for optimum results is solved theoretically as well as practically, given that any problem which may appear in the course of implementation of the system had been resolved through analytic approach at the very start of the design stage. Such approach provides for the only viable manner for an applied informational system to be optimally utilized at minimum costs. Findings: This has been reconfirmed and proven by research monitoring and analysis of a number of informational systems applied in various organizations from shipyards, oil/petrochemical plants, steel mills etc., and way further to nonindustrial organizations, such as hospitals. Research limitations/implications: Analytical/synthetical approach led to a conclusion that all stages of design and development of an informational system are of equal importance, so each and everyone of them must be given equally careful consideration. Practical implications: By employment of data flow model all complex processes have been solved, all basic elements having been featured on the model with the logically required mutual connections. Linkage and basic elements flow sequence represents the basic for successful problems resolve in any informational system. Originality/value: This scientific, engineering approach to problems solving in the system operational use provides for applicability in most various cases, such as where design, development, implementation of an informational system represents the very basic for a sound and profitable business operation of an organization. Besides; the approach provides for wide flexibility and range in problems solving, whereby the same can be predicted, located and interconnected.