00727naa#a2200193#i#450# EN\\bibl\104567 20251004044244.6 2413-2527 20250925b2025####ek#y0engy0150####ca RU Key Challenges of Implementing ETL/ELT Processes and Methods to Overcome Them Journal article Saint-Petersburg FSBEI HE "Emperor Alexander I St. Petersburg State Transport University" 2025 7 с. Journal article local Администрирование базой данных. 004.658 Bitchenkov Dmitry Igorevich Zlobina Margarita Sergeevna Ermakov Sergey Gennadievich izvestiapgups.editorum.ru