Zinovatna S. Information technology of increase of automated systems performance by methods of database restructuring

The object is automated systems (AS), based on relational databases (DB); the subject is methods, models and means of performing of restructuring in the scheme of relations; the aim is to reduce running time of query of AS, which uses relational databases, by improvement of technology of DB restructuring by means of relations denormalization; the methods are theory of sets, theory of translation, statistical analysis, probability and optimization of query theory; novelty lies in elaboration of method of determination of possible variants of restructuring, in elaboration of method of estimation of denormalization introduction efficiency, in suggesting simulation model of AS functioning; the results: the program DeNormDB, which realizes the offered methods, is created; the program was implemented in Odesa policlinic 16, Odesa city invalid society and Odesa national polytechnic university; the field is automated information systems.