Visual Studio 2005 doesn\'t provide an interface for creating relationships between tables in a SQL Server CE database (I\'m using version 3.0) and you can\'t open a Compact Edi
I know it's a "very long time" since this question was first asked. Just in case, if it helps someone,
Adding relationships is well supported by MS via SQL Server Compact Tool Box (https://sqlcetoolbox.codeplex.com/). Just install it, then you would get the option to connect to the Compact Database using the Server Explorer Window. Right click on the primary table , select "Table Properties". You should have the following window, which contains "Add Relations" tab allowing you to add relations.
