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 versionĭetailed history Genesis Older version, yet still maintained: 15.0 Older version, yet still maintained: 14.0 Older version, yet still maintained: 13.0 Older version, yet still maintained: 12.0 Older version, yet still maintained: 10.25 Old version, no longer maintained: 4.21a ( WinNT) Old version, no longer maintained: 4.2B ( OS/2) Old version, no longer maintained: 4.2A ( OS/2) Old version, no longer maintained: 1.1 ( OS/2) Old version, no longer maintained: 1.0 ( OS/2)
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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