Ms Sql Server Express Portable -

@echo off echo Starting LocalDB... SqlLocalDB start MSSQLLocalDB echo Attaching database from USB drive... SqlCmd -S (localdb)\MSSQLLocalDB -i "%~dp0attach.sql" echo Ready. Connect using (localdb)\MSSQLLocalDB pause

| Database | Portable | SQL Compatibility | Best For | |----------|----------|------------------|-----------| | | Yes (single file) | Partial (no stored procs) | Local apps, mobile | | LiteDB | Yes (C# NoSQL) | LINQ, not T-SQL | .NET apps | | Firebird Embedded | Yes | Close to SQL-92 | Cross-platform | | PostgreSQL (portable) | Community-ported | Full | Advanced SQL needs | ms sql server express portable

SqlLocalDB info You should see MSSQLLocalDB as the default instance. On your USB drive (e.g., E:\ ), create: @echo off echo Starting LocalDB