Worldwide Vendor Revenue Estimates from RDBMS Software, Based on Total Software Revenue, 2006 (Millions of Dollars)
| 2006 | 2006 Market Share (%) | 2005 | 2005 Market Share (%) | 2005-2006 Growth (%) |
Oracle | 7,168.0 | 47.1 | 6,238.2 | 46.8 | 14.9 |
IBM | 3,204.1 | 21.1 | 2,945.7 | 22.1 | 8.8 |
Microsoft | 2,654.4 | 17.4 | 2,073.2 | 15.6 | 28.0 |
Teradata | 494.2 | 3.2 | 467.6 | 3.5 | 5.7 |
Sybase | 486.7 | 3.2 | 449.9 | 3.4 | 8.2 |
Other Vendors | 1,206.3 | 7.9 | 1,149.0 | 8.6 | 5.0 |
Total | 15,213.7 | 100.0 | 13,323.5 | 100.0 | 14.2 |
原文参考：http://www.gartner.com/it/page.jsp?id=507466
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