How do you create a foreign key relationship in a SQL Server CE (Compact Edition) Database?

Question

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

Answer 1

You need to create a query (in Visual Studio, right-click on the DB connection -> New Query) and execute the following SQL:

ALTER TABLE tblAlpha
ADD CONSTRAINT MyConstraint FOREIGN KEY (FK_id) REFERENCES
tblGamma(GammaID)
ON UPDATE CASCADE

To verify that your foreign key was created, execute the following SQL:

SELECT * FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS

Credit to E Jensen (http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=532377&SiteID=1)