using SSMS to connect SDF file

I used VS 2012 to create a desktop database mytest.sdf and tried to use MS SQL Server 2012 SSMS to open it, but I got error message and can not open the database. I just wonder does MS SQL Server 2012 support to open SDF file. If yes, how I can access SDF file.
Your information and help is great appreciated,

Sourises,
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