foreign key 中文意思是什麼
foreign key
解釋
外部關鍵碼-
To disable a foreign key constraint for replication
在復制時禁用foreign key約束 -
How to : disable foreign key constraints for replication
如何:對復制禁用外鍵約束 -
Foreign key base table
外鍵基表 -
Table contains a customer id as a foreign key column
表包含作為外鍵列的客戶id 。 -
However, you can enter a null in the foreign - key column
但是,可以在外鍵列中輸入空值。 -
Creating a foreign key using the foreign key tool is also very easy
透過foreign key工具建立一個外鍵也是非常容易的。 -
First, select the create foreign key tool in the palette, and then select the source table
首先,在面板中選擇create foreign key工具,然後選擇源表。 -
If the foreign key constraints are specific to the source database but are not disabled during replication, they may unnecessarily prevent new data from being entered in the destination database
如果foreign key約束是源數據庫特有的,但在復制過程中未禁用該約束,則它們可能會無謂地妨礙向目標數據庫輸入新數據。 -
To create a foreign key relationship in table designer in
在表設計器中創建外鍵關系 -
The foreign key side is also denoted by a key symbol
外鍵方也由鍵符號表示。 -
A relationship is analogous to a join path that might exist between primary and foreign key columns in a relational database
關系類似於可能存在於關系數據庫中的主鍵列和外鍵列之間的聯接路徑。 -
The apply portion of full refresh will fail on a target table that is a foreign key to another table that is already populated, because it will not be able to delete from the parent table
在作為已填充的另一表的外鍵的目標表上,完全刷新的apply部分將失敗,因為不可以從父表刪除它。 -
Catalog name in which the foreign key table is defined
在其中定義外鍵表的目錄名稱。 -
Table is the foreign key table, and verify that the
表是否為「外鍵表」 ,並驗證兩個表是否都選定了 -
Unqualified schema name in which the foreign key table is defined
在其中定義外鍵表的架構的非限定名稱。 -
Is the name of the foreign key table
是外鍵表的名稱。 -
Foreign key table name
外鍵表的名稱。 -
How to : view foreign key properties
如何:查看外鍵屬性 -
Key defining the target of this step was to reform relationships between entities, and to define the primary key and foreign key for every entity ; 4
( 3 )定義鍵本階段的目標是改善實體聯系,為每個實體定義主鍵,遷移主鍵以建立外鍵。 -
You can enforce domain integrity to restrict the type by using data types, restrict the format by using check constraints and rules, or restrict the range of possible values by using foreign key constraints, check constraints, default definitions, not null definitions, and rules
您可以強制域完整性限制類型(通過使用數據類型) 、限制格式(通過使用check約束和規則)或限制可能值的范圍(通過使用foreign key約束、 check約束、 default定義、 not null定義和規則) 。
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