1、This URI gets an Actor with primary key m1
這個(gè)URI會(huì)獲取一個(gè)帶有主鍵m1 的Actor

2、The Time table has primary key date_time.
Time表的主鍵是 date_time。

3、You can also create a primary key class for entities that have composite keys.
還可以為具有組合鍵的實(shí)體創(chuàng)建一個(gè)主鍵類。

4、This surrogate column can be designated the primary key column.
可以將該代理列指定為主鍵列。

5、You don't need to worry about messing around with the primary key or foreign key.
您無需擔(dān)心處理主鍵或外鍵的麻煩。

6、A primary key is used to uniquely identify the rows in a table
關(guān)鍵字段是用來確認(rèn)一張表中記錄的唯一性的。

7、You can see that the primary key is indeed a composite made up of the street and city fields.
可以看到，主鍵實(shí)際上是由street和city字段組合而成的。

8、On the primary key Tasks page, select deptno as the primary key for the Department entity.
在主要關(guān)鍵字Tasks頁(yè)面中，選擇deptno以作為Department實(shí)體的主要關(guān)鍵字。

9、This happens when no primary key is defined.
即使沒有定義主鍵，這種操作也會(huì)發(fā)生。

10、They use database-generated primary key values for the ID attribute.
它們?yōu)镮D屬性使用數(shù)據(jù)庫(kù)生成的主鍵值。

11、As noted previously, of course, the primary key logic found in the application isn't bulletproof.
當(dāng)然，如前所述，應(yīng)用程序中的主鍵邏輯并不是很保險(xiǎn)。

12、How to set primary key with duplicate values based on main primary key?
如何基于主密鑰重復(fù)值，主鍵設(shè)置？

13、To help with replication ER requires that the table have a primary key defined.
要實(shí)現(xiàn)更好的復(fù)制，ER要求表定義一個(gè)主鍵。

14、In this case, there is no primary key available in the EPR.
在這個(gè)范例中，EPR中沒有可用的主鍵。

15、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。

16、A primary key is used to uniquely identify the rows in a table.
關(guān)鍵字段是用來確認(rèn)一張表中記錄的唯一性的。

17、So, in the case of the book table, there is a primary key field called book_id.
所以，在book表這個(gè)示例中，有一個(gè)主鍵字段叫做book_id。

18、A good candidate for a primary key has several characteristics.
一個(gè)好的主鍵候選具有幾個(gè)特征。

primary key翻譯