The "Part5.rar" extension indicates that the full database installer (which can be several gigabytes) was split into multiple parts to make downloading easier.
Direct access to all World Championship matches and major historical tournaments from over 450 years of chess history. Mega Database 2023 Part5 rar
A downloadable encyclopedia with over 600,000 player names and more than 40,000 player photos (compatible with ChessBase 17 or 16 ). Technical Details of "Part5.rar" The "Part5