Three-tier architecture, database management system, modern building, glass facade, steel structure, sleek lines, minimalist design, rows of servers, blinking lights, air conditioning vents, backup power systems, network cables, circuit boards, processing units, storage devices, software applications, user interfaces, query optimization, data normalization, transaction processing, concurrency control, security mechanisms, authentication protocols, authorization access, encryption methods, backup and recovery, database administrators, system analysts, IT professionals, working on computers, typing on keyboards, staring at screens, collaborative teamwork, futuristic ambiance, softbox lighting, shallow depth of field.