From an operational perspective, responsibilities include troubleshooting problems, working maintenance windows and providing 24x7 on-call supports on a rotational basis
Pre-installation Tasks
Installing SQL Server and Patch Mgmt
Installing & Maintaining DB Tools
Uninstallation
Database Upgrade
Database Migration
Database Patch Installation
Physical Database Design and Implementation
Design Database, RAID configuration & Capacity Planning for Large Databases
Setup and implement Cluster Setup in multiple nodes environment