Oracle database architecture, complex system diagram, futuristic digital background, 3D illustration style, detailed circuit boards, wires, microchips, CPU, motherboard, servers, data storage units, network routers, switches, firewalls, cloud computing concept, virtualization, multiple screens displaying database queries, coding windows, command prompts, colorful graphs and charts, realistic metallic materials, intricate details, ambient lighting, cinematic composition, wide-angle lens.