Ms Sql Server Express Portable -

If you absolutely cannot install anything on the host computer, you should consider a database that is designed to be truly portable (zero-install). Portable SQL Server - Server Fault

1. The Best "Near-Portable" Option: SQL Server Express LocalDB ms sql server express portable

It runs in user mode rather than as a system service. It only starts when an application connects to it and shuts down when not in use. If you absolutely cannot install anything on the

While it doesn't require a complex setup, it still requires a one-time LocalDB MSI installation (~70MB) on the host machine. 2. The True Portable Alternatives ms sql server express portable