data aggregation
compiling of information from databases with intent to prepare combined datasets for data processing
en-GB/ˈdeɪtə ˌæɡɹɪˈɡeɪʃn/
en-US/ˈdædə ˌæɡɹəˈɡeɪʃən/
compiling of information from databases with intent to prepare combined datasets for data processing