Telyatnikov O. Optimization models and algorithms of the distributed databases of computer information systems

Object of research: distributed databases of computer information systems. The purpose of research: increase of productivity of work DDB of computer information systems by optimizing the data distribution among the nodes of the computer network. Methods of research: the system analysis, object-oriented modelling, methods of optimization. Theoretical and practical results: object model of DDB is developed; the criterion of efficiency of DDB considering time of queries processing and updates spreading is offered; modification of genetic algorithm as method of optimization is developed; results of experimental researches on the basis of which practical recommendations on increase of productivity of work DDB are developed are received. Novelty: for the first time, for the optimization of the distribution of data in the computer information systems, it is proposed to use the together modified genetic algorithm and an object model of the DDB. A degree of introduction: results are introduced in company "Kiev-Konti", in research work of Donetsk National Technical University and in educational process on faculty "Automated control systems" Donetsk National Technical University. Area of use: interbranch.