 Windows Internal Database

Windows Internal Database (codenamed WYukon, sometimes referred to as SQL Server Embedded Edition) is a variant of SQL Server Express 2005–2014 that is included with Windows Server 2008 (SQL 2005), Windows Server 2008 R2 (SQL 2005), Windows Server 2012 (SQL 2012), Windows Server 2012 R2 (SQL 2012) and Windows Server 2016 (SQL 2014) and is included with other free Microsoft products released after 2007 that require an SQL Server database backend.Windows SharePoint Services 3.0 and Windows Server Update Services 3.0 both include Windows Internal Database, which can be used as an alternative to using a retail edition of SQL Server.