FOREIGN KEY 約束可能會導致循環或多個級聯路徑。 錯誤

Question

我有 4 個表 StokCard 表 StokGroup 表 GroupFeature 表和 StokCardAdditionalFeatureValue 表所有表都從 BaseModel 獲取主鍵但我收到此錯誤

錯誤在這里

public class StokCard : BaseModel
{
        public string IPMKodu { get; set; }
        public int StokGroupId { get; set; }
        public StokGroup StokGroup { get; set; }
        ........................................ other properties
}

public class StokGroup:BaseModel
{
        public string GroupName { get; set; }
        public List<GroupFeature> GroupFeatures { get; set; }
        public List<StokCard> StokCards { get; set; }
}
public class GroupFeature : BaseModel
{
        public int StokGroupId { get; set; }
        public StokGroup StokGroup { get; set; }
        public List<StokCardAdditionalFeatureValue> StokCardAdditionalFeatureValues { get; set; }
}

public class StokCardAdditionalFeatureValue:BaseModel
{
        public int StokKartId { get; set; }
        public StokCard StokCard { get; set; }
        public int GroupFeatureId { get; set; }
        public GroupFeature GroupFeature { get; set; }
        public string FeatureValue { get; set; }
}

Answer 1

從StokCardAdditionalFeatureValue開始，我們至少有兩個級聯路徑：

通過GroupFeater屬性，然后我們引用StokGroup

通過StokCard ，然后通過StokGroup

您需要驗證並清理您的數據庫設計，以免導致此類循環。