A database administrator (DBA) is a professional responsible for managing and maintaining databases. Their primary tasks include ensuring data is stored securely, optimizing database performance, and performing regular backups to prevent data loss. DBAs also handle user access and permissions, ensuring that only authorized individuals can view or modify the data. In addition to maintenance, a DBA may also be involved in designing database systems to meet the needs of an organization. They work closely with software developers and IT teams to implement new database solutions and troubleshoot any issues that arise, ensuring that data is always available and reliable.