TY CONF TI CONTEMPORARY ISSUES IN DATABASE QUERY OPTIMIZATION KW Oracle databases KW SQL queries KW optimization KW database performance KW query analysis JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2026 AU Krasikov, R.A. AU Avilova, O.A. AU Samushonok, R.V. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov