It seems impossible to truly disable IntelliSense officially. When disconnected through Tools->Options->Text Editor->C/C++->Advanced->Disable IntelliSense
the database, it is still created. That is, project.sdf still exists next to your project.sln.
I found two ways to completely disable it:
- : project.sdf . Visual Studio , Intellisense.
- : Microsoft SQL Server Compact 4