如果我使用.mdf文件部署应用程序，用户是否需要安装SQL 2008 Express？

I'm making a Win app on the 3.5 framework. I'd like to include a database file with the app. This would a single-user db. I looked at the 2 different types of db files I can add, the sdf and mdf. Thw sdf (compact) db is missing some functionality I need, so I prefer the mdf. The description on the mdf file "Service oriented database file" leads me to believe that whoever installed my application would also have to install the SQL service required to access that mdf. Is this correct?I'm making a Win app on the 3.5 framework. I'd