What is a good lightweight database that can be used for an ASP.NET MVC application?

I need lightweight database for an ASP.NET MVC application.

• would prefer not to install anything additional on the 开发者_运维问答host box
• would also prefer being a little more robust than XML
• would like to use activerecord or entity frameworks

SQL Server Compact Edition claims to have an "XCopy" installation (copy and run), and it would have the fewest integration headaches.

You can check sqlite

• Sqlite http://www.sqlite.org/
• visadb http://www.vistadb.net/

Firebird can do the job well

The embedded version is an amazing variation of the server. It is a fully featured Firebird server packed in just a few files. It is very easy to deploy, since there is no need to install the server.