Question: what roles and responsibilities are required for various dbms?
Answer: Software installation and Maintenance. A DBA often collaborates on the initial installation and configuration of a new Oracle, SQL Server etc database. ... 
Data Extraction, Transformation, and Loading. ... 
Specialised Data Handling. ... 
Database Backup and Recovery. ... 
Security. ... 
Authentication. ... 
Capacity Planning. ... 
Performance Monitoring.