3-level architecture, DBMS, futuristic, metallic, sleek, modern building, glass walls, steel beams, complex circuitry, wires, motherboards, servers, databases, queries, transactions, schemas, instances, storage devices, backup systems, recovery mechanisms, user interfaces, command-line interface, graphical user interface, menus, buttons, scroll bars, windows, tabs, toolbars, status bars, error messages, warning signs, debugging tools, performance monitors, system administrators, IT professionals, offices, cubicles, fluorescent lights, air conditioning vents.