SBI is India's oldest and one of the largest banks globally. It automated all its branches in the mid-1990s and computerized them all by 2005 using various software systems. SBI uses programs like TCS BaNCS for core banking and Oracle for its database. It implements technologies like centralized trade finance systems from SAP and processes transactions in real-time to keep customer accounts and funds updated instantly. All customer records and transactions are stored on SBI's main server to provide services like online complaints processing and automatic account balance alerts.