public void Add_SDB4()
        {
            DataTable dt = DataProvider.CreateParentDataTable();

            dt.Constraints.Add("UniqueConstraint", dt.Columns["ParentId"], false);
            //Break the constraint --> but we shouldn't get the excption --> wrong assumpation
            //TODO:check the right thing
            DataProvider.TryToBreakUniqueConstraint();
            Assert.AreEqual(2, dt.Select("ParentId=1").Length, "CN36");
        }