Setup User Interface Reference (SQL Server Express)
Use the Instance Name page of the SQL Server Installation Wizard to specify whether to create a default instance or a named instance of SQL Server. A default instance name is used unless you choose a named instance. Each SQL Server instance is made up of a distinct set of services with specific settings for collations and other options. The directory structure, registry structure, and service names all reflect the specific instance ID of the SQL Server instance created during SQL Server Setup. An instance is either the default instance or a named instance. The default instance name is MSSQLSERVER; […]
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