I recently installed WebMatrix Version Next. I found it very neat and easy to install. You can download it for FREE. After installing it I download when I checked the about page, it displayed following result.
Version 2 Beta
IIS 7.5 Express: 7.1.1307.1
.NET Framework: 4.0.30319.235 (RTMGDR.030319-2300)
Web Deploy: 7.1.1307.1
SQL Server Compact: 4.0.8482.1
Web Platform Installer: 7.1.1307.1
ASP.NET Web Pages: 1.0.20105.407
ASP.NET Web Pages: 2.0.10906.0
What got my attention was that when I noticed SQL Server Compact version 4 installed with WebMatrix. As soon as I see this SQL Server CE, I decided to install my personal sample database to test various. However, when I tried to install my very old sdf file (data file) it did not work. Finally, I did upgraded it to latest version it finally worked and I can install the same easily.
I know many must be looking for sample database to run on SQL Server CE. You can use my converted database. This infect is very old database, I just upgraded the version of the same.
Reference: Pinal Dave (https://blog.sqlauthority.com)