00624naa#a2200205#i#450# EN\\bibl\871 20260308011623.7 1999-5644 20131223b2013####ek#y0engy0150####ca RUS RU The use of relational database systems in the educational institution site control Journal article CHERKIZOVO Russian State University of Tourism and Service 2013 6 с. Journal article local Gorbov Leonid Shchikanov Aleksey Novikova Natalya Pogodin Aleksandr naukaru.ru