SQL Server 4.2 was shipped in 1992, bundled with OS/2 version 1.3, followed by version 4.21 for Windows NT, released alongside Windows NT 3.1. This was the first version of Microsoft SQL Server, and served as Microsoft's entry to the enterprise-level database market, competing against Oracle, IBM, Informix, Ingres and later, Sybase. On June 12, 1988, Microsoft joined Ashton-Tate and Sybase to create a variant of Sybase SQL Server for IBM OS/2 (then developed jointly with Microsoft), which was released the following year. Legend: Old version Older version, still maintained Latest versionÄetailed history Genesis Older version, yet still maintained: January 8, 2030 Older version, yet still maintained: January 14, 2025 Older version, yet still maintained: October 12, 2027 Old version, no longer maintained: October 11, 2022 Older version, yet still maintained: July 14, 2026 Old version, no longer maintained: July 13, 2021 Older version, yet still maintained: July 9, 2024 Old version, no longer maintained: July 12, 2022 Old version, no longer maintained: July 11, 2017 Old version, no longer maintained: July 9, 2019 Old version, no longer maintained: July 8, 2014 Old version, no longer maintained: April 12, 2016 Old version, no longer maintained: April 12, 2011 Old version, no longer maintained: April 9, 2013 Old version, no longer maintained: April 8, 2008 Old version, no longer maintained: January 11, 2011 Old version, no longer maintained: December 31, 2005 The history of Microsoft SQL Server begins with the first Microsoft SQL Server database product – SQL Server v1.0, a 16-bit relational database for the OS/2 operating system, released in 1989.
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