The worldwide market for relational database management system (RDBMS) software grew by 9.4% to $14.6 bln in 2005, according to IDC. Gartner Dataquest has also issued its annual RDBMS market share report for 2005, reporting that the market grew 8.3% to $13.8 bln. Gartner reported increased demand for data warehousing and business intelligence “driven by an explosion of data” as an important factor driving the growth of the RDBMS market.