Delete ForeignKey Constraint in SQL Server Compact 3.5

Hi,

i am searching for a solution for a few hours now. I created a table in sql_ce with the follwoing query:

CREATE TABLE [Customer]
([_id] int NOT NULL  IDENTITY (1,1),
[firstName] nvarchar(4000) NULL,
[lastName] nvarchar(4000) NULL,
[sex] nvarchar(4000) NULL,
[orderAddress_fk] int NULL,
[deliveryAddress_fk] int NULL,
[paymendMethod_fk] int NULL,
[emailAddress] nvarchar(4000) NULL,
[phone] nvarchar(4000) NULL,
[mobilePhone] nvarchar(4000) NULL,
[company] nvarchar(4000) NULL);

and added a foreignkeyconstraint. it was created succesfully, because i am not able to drop that table. i used the following query:

ALTER TABLE Customer
ADD CONSTRAINT orderAddress_fk
FOREIGN KEY (orderAddress_fk) REFERENCES Address(_id)

so i want to drop the constraint and tried the follwing commands:

ALTER TABLE [Customer]
ALTER COLUMN orderAddress_fk
DROP DEFAULT

ALTER TABLE [Customer]
DROP CONSTRAINT orderAddress_fk

the query executes with succes but after executing, i am still not able to drop the table, and the UI shows that the constraint still exists...

i dont know what to try else... :(

Tags: SQL Server CE, SQL Server