Which of the following is NOT a responsibility of a DBA?

• A. Database security management
• B. Application development and deployment
• C. Performance tuning and optimization
• D. Backup and recovery management

Answer: (B)

A Database Administrator (DBA) typically has a variety of responsibilities focused on maintaining and managing databases to ensure their availability, performance, and security. One of the core functions of a DBA is database security management, which involves setting permissions, access controls, and monitoring for unauthorized access. Performance tuning and optimization are also critical, as DBAs work to ensure that databases run efficiently, adjusting queries and indexing as necessary. Additionally, backup and recovery management is a fundamental duty, allowing DBAs to restore data in case of loss or corruption, ensuring data integrity and availability.

Application development and deployment, however, falls more under the realm of software development rather than database administration. While DBAs may need to work closely with developers to optimize database interactions or to ensure that applications are accessing the database efficiently, their primary focus is not on developing applications themselves. Instead, they concentrate on maintaining the system that supports the applications and ensuring that the data is used and stored securely and efficiently.