Localdb Mssqllocaldb -

: Because LocalDB runs under the user's profile, it is not suitable for shared server environments where multiple users need simultaneous access. SQL Server Express LocalDB - Microsoft Learn

Supports Windows Authentication by default; users must have a Windows login to connect. localdb mssqllocaldb

public static void CreateDatabase(string databaseName) { string createDbQuery = $@" CREATE DATABASE [{databaseName}] ON PRIMARY (NAME = N'{databaseName}', FILENAME = N'{Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)}\\{databaseName}.mdf') LOG ON (NAME = N'{databaseName}_log', FILENAME = N'{Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)}\\{databaseName}_log.ldf')"; : Because LocalDB runs under the user's profile,

This LocalDB instance is perfect for development, testing, and lightweight applications without needing a full SQL Server installation! localdb mssqllocaldb