Background of Microsoft Sql Server Database

The following timeline summarizes the development history of SQL Server:
—   1987 Sybase releases SQL Server for UNIX.
—   1988 Microsoft, Sybase, and Aston-Tate port SQL Server to OS/2.
—   1989 Microsoft, Sybase, and Aston-Tate release SQL Server 1.0 for OS/2.
—   1990 SQL Server 1.1 is released with support for Windows 3.0 clients.
—   Aston-Tate drops out of SQL Server development.
—   1991 Microsoft and IBM end joint development of OS/2.
—   1992 Microsoft SQL Server 4.2 for 16-bit OS/2 1.3 is released.
—   1992 Microsoft and Sybase port SQL Server to Windows NT.
—   1993 Windows NT 3.1 is released.
—   1993 Microsoft and Sybase release version 4.2 of SQL Server for Windows NT.
—   1994 Microsoft and Sybase co-development of SQL Server officially ends.
—   Microsoft continues to develop the Windows version of SQL Server.
—   Sybase continues to develop the UNIX version of SQL Server.
—   1995 Microsoft releases version 6.0 of SQL Server.
—   1996 Microsoft releases version 6.5 of SQL Server.
—  1998 Microsoft releases version 7.0 of SQL Server.
—   2000 Microsoft releases SQL Server 2000.
—  SQL Server 2000 Service Pack 1 - Release date: June 12, 2001
—  SQL Server 2000 Service Pack 2 - Release date: November 30, 2001
—  SQL Server 2000 Service Pack 3 - Release date: January 17, 2003
—  SQL Server 2000 Service Pack 3a - Release date: May 19, 2003
—  SQL Server 2000 Service Pack 4 - Release date: May 6, 2005
—   2005 Microsoft releases SQL Server 2005 on November 7th, 2005.
—  SQL Server 2005 Service Pack 1 - Release date: March 18, 2006
—  SQL Server 2005 Service Pack 2  - Release date: March 5, 2007
—  SQL Server 2005 Service Pack 3 - Release date: December 15, 2008
—   2008 Microsoft releases SQL Server 2008 RTM on August 2008.
—  SQL Server 2008 Service Pack 1 - Release date: August 27  2009
—  SQL Azure
—  Microsoft releases SQL Server 2008 R2 RTM on April 21, 2010.
—  SQL Server 2008 Service Pack 2 - Release date: September 29  2010
—  SQL Server 2011, Code name Denali CTP1 Release date: November 8, 2010
—  SQL Server 2005 Service Pack 4 - Release date: December 17, 2010