The paper presents main characteristics of object-oriented and logic programming. Although different in assumptions, in numerous applications these two programming styles turn out complementary to each other. To model real world objects and their behaviour the most efficient method should be chosen. On the basis of an intelligent" database design it has been shown that the combination of the C++ language (MS Visual), Prolog (Amzi! Prolog+ Logic Server) and the relational database (MS Access) is functional and worth applying.
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The paper describes modelling of a complex information system supporting the work of a dialysis ward and scientific research carried out there. The system is designed to process multimedia information on patients, health care staff, and management of medical material and equipment. This information proves very useful for scientific research and supports physicians in taking decisions concerning extracorporeal dialysis equipment control. The decision-taking system together with optimal control algorithms are used to assess adequacy of dialyses, which results in higher efficiency of dialyses and improvement of life quality of dialysed patients. The new generation of information systems needs making use of scattered multimedia information, algorithms of computer intelligence and user-friendly communication. To meet these requirements it becomes necessary to apply environments enabling modelling of customer's requirements, information system structure and computer-man communication interface. The technology of component and object oriented modelling allows multiple code usage, and ensures higher reliability and easier modification of the system.
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