[[Microsoft]]'s entry to the enterprise-level database market, competing against [[Oracle]], [[IBM]], and [[Sybase]]. The first version was SQL Server for [[OS/2]] (about 1989) which was essentially the same as Sybase SQL Server 4.0 on [[Unix]], [[VMS]], etc.
* [[Microsoft SQL Server]], a relational database server from Microsoft
* [[Sybase SQL Server]], a relational database server developed by Sybase
* ''SQL Server Pro'', a trade publication and web site owned by Penton Media
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About the time [[Windows/NT 4.0|Windows NT]] was coming out Sybase and Microsoft parted ways and pursued their own design and marketing scheme. Later, Sybase changed the name of its product to [[Adaptive Server Enterprise]] to avoid confusion with Microsoft SQL Server.
SQL Server uses a variety of [[SQL]] called T-SQL, a superset of SQL-92 (ISO standard for SQL, certified in 1992). T-SQL mainly adds support for [[SQL transactions|transactions]].
As of this writing (September 2001), SQL Server has ~14% of the commercial database market, according to [[Gartner Group]].
