However, the term "MS SQL Server Express Portable" in the community usually refers to two scenarios:
SQL Server installs system-wide dependencies, such as specific Visual C++ Redistributables and the Microsoft Native Client, which may not exist on a host machine. ms sql server express portable
Run the official Microsoft SQL Server image using a simple command: However, the term "MS SQL Server Express Portable"
Portable databases face a high risk of physical theft or loss. Protect your data with these security measures: ms sql server express portable
If your goal is to move the database file itself (the *.mdf file), you can "attach" it to any SQL Server instance (including LocalDB or Express).