As a Database Administrator, you will need to master following:

• administer ICT system
• balance database resources
• create data models
• data models
• data quality assessment
• data storage
• database development tools
• database management systems
• define database physical structure
• design database backup specifications
• design database scheme
• distributed computing
• information structure
• interpret technical texts
• maintain database performance
• maintain database security
• operate relational database management system
• perform backups
• query languages
• resource description framework query language
• use an application-specific interface
• use scripting programming

More generally, a database administrator is also versed in:

• apply company policies
• manage database
• perform ICT troubleshooting
• system backup best practice
• use databases

It also helps to know the following:

• DB2
• Filemaker (database management systems)
• IBM Informix
• LDAP
• LINQ
• MDX
• Microsoft Access
• MySQL
• N1QL
• ObjectStore
• OpenEdge Database
• Oracle Relational Database
• PostgreSQL
• SPARQL
• SQL Server
• Teradata Database
• XQuery
• design database in the cloud
• execute ICT audits
• implement ICT safety policies
• implement a firewall
• implement anti-virus software
• manage cloud data and storage
• online analytical processing
• support ICT system users
• use automatic programming
• business intelligence
• estimate duration of work
• provide ICT support
• provide technical documentation
• provide technical training
• quality assurance methodologies
• remove computer virus or malware from a computer
• safeguard online privacy and identity
• use back-up and recovery tools
• use different communication channels
• use spreadsheets software