Specify the value to indicate the use of default key table.
指明的值来表示缺省密钥表的使用。
The first string defines the table and the second defines the key.
第一个字符串定义了表，第二个字符串定义了键。
One column links to the form (the row in the table) using a foreign key.
一列使用一个外键链接到表单上(表中的一行)。
This new tag has two key attributes, as shown in Table 1.
这一新的标签有两个重要属性，如表1 所示。
Create a foreign key to link this new table with the existing employee table.
创建一个外键，以便将这个新表与已有的雇员表相连接。
These different soft key bar states are described in the following table.
这些不同的软键工具条状态在下表中进行一一描述。
The last factor in key selection is its impact on the fact table.
键选择中的最后一个因素就是它对事实表的影响。
Make sure each table has a primary key.
确保每个表都有一个主键。
Heathcliff had the key in his hand that remained on the table.
希刺克厉夫把摆在桌子上的钥匙拿在手里。
TP will only benefit those queries that include the table partitioning key column.
TP只对那些包括表分区键列的查询有利。
Every record in the table has a unique ID called the primary key.
表中的每个记录都有一个惟一的ID，称为主键。
The target table must have a primary key.
目标表必须有一个主键。
To help with replication ER requires that the table have a primary key defined.
要实现更好的复制，ER要求表定义一个主键。
The first column (ID) is the primary key of the table.
第一列(ID)是此表的主键。
A partitioning key is defined on a table with the CREATE table statement.
分区键是在一个表上用CREATEtable语句定义的。
The row key is the primary key of the table and is typically a string.
行键是表的主键，通常是一个字符串。
Our virtual foreign key is based on two columns from the TB_RIGHT table.
我们的虚拟外键基于TB_RIGHT表的两个列。
If you recall, your DB2 table was created specifying the primary key of the ACCOUNT_NUM column.
您可以回想一下，创建db2表时指定了account_num列作为主键。
In this example, EMPNO is the unique key of the table.
在本例中，EMPNO是表的唯一键。
Table 1 describes the key elements of the use case.
表1描述了该用例的主要元素。
Here's the key to SimpleDB: forget about the columns in todo_simple (Table 2).
SimpleDB的关键在于：忘记了todo_simple中的列(表2)。
Each table has an id field that serves as the primary key.
每个表有一个用作主键的id字段。
Including this argument is key; without it, Zend_Db will delete all records in the table.
使用这个参数很重要；因为如果不作限制，Zend_Db将删除表中的所有记录。
A one-to-many association is specifically mapped to a foreign key in the "many" table.
一个一对多关联被映射到“many ”表的一个外键。
Create a new row in the transtimes table with timestamp, unique key, and connect time.
用时间戳、惟一键和连接时间在transtimes表中创建一个新行。
So, in the case of the book table, there is a primary key field called book_id.
所以，在book表这个示例中，有一个主键字段叫做book_id。
You define a partition key for a table on the CREATE TABLE statement.
要在CREATETABLE语句中指定表的分区键。
The document model belongs_to :user if the DOCUMENTS table has a user_id foreign key column.
如果DOCUMENTS表有一个 user_id 外键列，则文档模型为 belongs_to :user。
Step 5: Adding a primary key to a table.
步骤5：向表添加主键。
In fact, it's the primary key of the dw_authors table, so it must exist.
事实上这是dw_authors表的主键，因此必须有。
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