To get VS2012 designer support for a SQLite connection when adding an EDMX file, go here:
http://system.data.sqlite.org/index.html/doc/trunk/www/downloads.wiki Then get this file: *Setups for 32-bit Windows (.NET Framework 4.5) sqlite-netFx45-setup-bundle-x86-2012-1.0.84.0.exe* *This setup package features the mixed-mode assembly and will install all the necessary runtime components and dependencies for the x86 version of the System.Data.SQLite 1.0.84.0 (3.7.15.2) package. The Visual C++ 2012 SP1 runtime for x86 is included. The .NET Framework 4.5 is required. This setup package is capable of installing the design-time components for Visual Studio 2012.* Greg
