If you find tutorials suggesting User Instances today, they are obsolete. Do not use them for new projects.
It still requires a one-time installation of the LocalDB MSI on the host machine; it cannot run purely from a folder without registry entries. 2. User Instances (AttachDBFileName) SQL Server Express supports a feature called User Instances ms sql server express portable
: While it technically needs an install, you can extract the files using a tool like 7-Zip or run it from a shared network folder using SqlLocalDB.exe . If you find tutorials suggesting User Instances today,
Verify installation by opening Command Prompt and typing: It involves extracting the SQL Server binaries from
This is the most common method for achieving true portability. It involves extracting the SQL Server binaries from the installation files manually.
If you need a relational database that is 100% portable, is the answer.
The king of portable databases. The entire database is a single file, and the engine is a tiny library compiled into your app.