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. A database is a collection of related information, accessed and managed by its DBMS. After experimenting with hierarchical and networked DBMSs during the 1970�s, the IT industry became dominated by relational DBMSs (Or Object-Relational Database Management System) such as Informix database, Oracle, Sybase, and, later on, Microsoft SQL Server and the like.