SQL Server Family Tree Names

1993 – SQL Server 4.21 for Windows NT
1995 – SQL Server 6.0, - SQL95
1996 – SQL Server 6.5, - Hydra
1999 – SQL Server 7.0, - Sphinx
1999 – SQL Server 7.0 OLAP, - Plato
2000 – SQL Server 2000 32-bit, - Shiloh (version 8.0)
2003 – SQL Server 2000 64-bit, - Liberty
2005 – SQL Server 2005, - Yukon (version 9.0)
2008 – SQL Server 2008, - Katmai (version 10.0)
2010 – SQL Server 2008 R2, - Kilimanjaro (version 10.50) aka KJ
2012 – SQL Server 2012 - Denali
2014 - SQL Server 2014 - Hekaton (Upcoming)