Source : Free On-Line Dictionary of Computing

database administrator
     
        An individual responsible for the design and management of the
        {database} and for the evaluation, selection and
        implementation of the {database management system}.  In
        smaller organisations, the data administrator and database
        administrator are often one in the same; however, when they
        are different, the database administrator's function is more
        technical.  The database administrator would implement the
        database software that meets the requirements outlined by the
        organisation's data administrator and {systems analyst}s.