1、This is important when data is decomposed into multiple tables having foreign key relationship.
當(dāng)將數(shù)據(jù)分解成多個(gè)具有外鍵關(guān)系的表時(shí)，這尤其重要。

2、Minimize the triggers, CHECK and foreign key constraints, and generated columns for the table.
盡量減少表上的觸發(fā)器、檢查和外鍵約束以及生成的列。

3、All DOC_IDs are unique to meet the foreign key constraints.
所有DOC_ID都是惟一的，以滿足外鍵約束。

4、Create a foreign key to link this new table with the existing employee table.
創(chuàng)建一個(gè)外鍵，以便將這個(gè)新表與已有的雇員表相連接。

5、Our virtual foreign key is based on two columns from the TB_RIGHT table.
我們的虛擬外鍵基于TB_RIGHT表的兩個(gè)列。

6、Each one-to-one association is buried as a foreign key in the table of either class.
每個(gè)一對(duì)一的關(guān)聯(lián)在表中任一類中充當(dāng)外鍵。

7、Missing join predicates, but only if a foreign key is defined.
丟失連接謂詞，只在定義了外鍵的情況下。

8、Non-identifying one-to-one foreign key relationship.
非標(biāo)識(shí)一對(duì)一外鍵關(guān)系。

9、Foreign key definitions in the DDL.
DDL中的外碼定義。

10、Each one-to-many association is buried as a foreign key in the table of the many class.
每個(gè)一對(duì)多的關(guān)聯(lián)在表中多個(gè)類中充當(dāng)外鍵。

11、For foreign key creation, another table with a primary key with a compatible data type is required.
對(duì)于創(chuàng)建外鍵，則需要另外一個(gè)具有主鍵的表，且該主鍵具有兼容的數(shù)據(jù)類型。

12、For example, the foreign key to the date table is not repeated for every keyword of a document.
例如，日期表的外鍵對(duì)于一個(gè)文檔的每個(gè)關(guān)鍵詞不會(huì)重復(fù)。

13、It is similar to a foreign key in a relational database.
它類似于關(guān)系數(shù)據(jù)庫中的外鍵。

foreign key翻譯