Ms Sql Server Express Portable -

SqlCmd -S (localdb)\MSSQLLocalDB Then run:

E:\PortableSQL\ ├── Data\ │ ├── MyDatabase.mdf │ └── MyDatabase_log.ldf ├── Scripts\ │ ├── start.bat │ ├── stop.bat │ └── attach.sql └── Tools\ └── SSMS.exe (optional, portable version of SSMS exists) Connect to LocalDB using SqlCmd or SSMS: ms sql server express portable

So, does a true exist? The short answer is: Not in the traditional sense, but there are powerful workarounds. FILENAME = 'E:\PortableSQL\Data\MyDatabase_log.ldf')

@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 ms sql server express portable

CREATE DATABASE MyDatabase ON (NAME = MyDatabase_dat, FILENAME = 'E:\PortableSQL\Data\MyDatabase.mdf') LOG ON (NAME = MyDatabase_log, FILENAME = 'E:\PortableSQL\Data\MyDatabase_log.ldf'); GO attach.sql