What are the roles of database administrator?

A database administrator (DBA) is responsible for managing and maintaining an organization's databases, ensuring their reliability, performance, and security. Key roles include installing and configuring database management systems, monitoring database performance, implementing backup and recovery procedures, and optimizing queries. Additionally, DBAs enforce data security policies and manage user access, while also planning for database growth and scalability. They often collaborate with developers and system administrators to support application development and troubleshoot issues.