Microsoft Sql Server 2019 Localdb

The instance is automatically launched when an application first attempts to connect to it and shuts down when the last connection is closed.

| Feature | LocalDB 2019 | SQLite | SQL Server Express | |--------|--------------|--------|--------------------| | SQL dialect | Full T-SQL | SQLite dialect | Full T-SQL | | Process model | On-demand user instance | In-process library | Windows service | | Tooling | SSMS, VS, EF Core | CLI + third-party tools | SSMS, VS, all APIs | | Disk space | ~140 MB | ~1 MB | ~800 MB | | Suitable for production | No (single dev) | Yes (low to medium read) | Yes (with limits) | microsoft sql server 2019 localdb

Unlike standard SQL Server instances that run as background services (typically under a dedicated service account like NT Service\MSSQLSERVER ), LocalDB runs under the security context of the user starting the instance. The instance is automatically launched when an application

Included with the SQL Server 2019 Express installer as a selectable feature . LocalDB is not a standalone "server" in the

LocalDB is not a standalone "server" in the traditional sense. It is an execution mode of SQL Server Express that runs in user mode. It does not run as a persistent Windows Service. Instead, the database engine starts dynamically when a user connects and shuts down automatically when the last connection closes.