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Some of the roles of the DBA may include Installation of new software � It is primarily the job of the DBA to install new versions of DBMS software, application software, and other software related to DBMS administration. It is important that the DBA or other IS staff members test this new software before it is moved into a production environment. Configuration of hardware and software with the system administrator � In many cases the system software can only be accessed by the system administrator. In this case, the DBA must work closely with the system administrator to perform software installations, and to configure hardware and software so that it functions optimally with the DBMS.Security administration � Ones of the main duties of the DBA is to monitor and administer DBMS security. This involves adding and removing users, administering quotas, auditing, and checking for security problems.Data analysis � The DBA will frequently be called on to analyze the data stored in the database and to make recommendations relating to performance and efficiency of that data storage. This might relate to the more effective use of indexes, enabling "Parallel Query" execution, or other DBMS specific features. Database design (preliminary) � The DBA is often involved at the preliminary database-design stages. The DBA knows the DBMS and system, can point out potential problems, and can help the development team with special performance considerations. Data modeling and optimization � By modeling the data, it is possible to optimize the system layouts to take the most advantage of the I/O subsystem. Responsible for the administration of existing enterprise databases and the analysis, design, and creation of new databases. Data modeling, database optimization, understanding and implementation of schemas, and the ability to interpret and write complex SQL queries Proactively monitor systems for optimum performance and capacity constraints Establish standards and best practices for SQL Interact with and coach developers in Structured mark up language scripting.
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