Total software sales from worldwide relational database management systems (RDBMS) totalled $13.8bn (£8.1bn) last year, which was an increase of 8.3% on 2004.
Figures from analyst Gartner show that the combined category of open source database management systems, which includes MySQL and Ingres, showed the strongest growth, although it was one of the smallest revenue bases.
Colleen Graham, an analyst at Gartner, said, “These open source RDBMS products continue to improve in terms of functionality and scalability, and RDBMS tool vendors are beginning to provide support for these offerings.”
The top-five vendors, led by Oracle, accounted for nearly 92% of the total RDBMS market. Of the top five, Microsoft was the only vendor to experience a growth rate above the industry average, mainly as a result of pent up demand for SQL Server 2005, said Gartner.
Gartner said Linux grew the fastest of all the RDBMS platforms (84% growth), driven primarily by Oracle, and the maturation and user acceptance of the Linux platform as a mission-critical DBMS platform.
RDBMS on the mainframe platform continued to show strength, growing faster than the Unix platform, and beating the overall growth rate, said the analyst.
The top five RDBMS suppliers in order, by market share, are Oracle (48.6%), IBM (22%), Microsoft (15%), Teradata (3.2%) and Sybase (2.9%).