可以将该代理列指定为主键列。
This surrogate column can be designated the primary key column.
主键列由其行选择器中的主键符号标识。
A primary key column is identified by a primary key symbol in its row selector.
这种约束旨在用于主键列。
Such a constraint is intended to be used with primary key columns.
为了简便，我们选择TITLE作为主键列。
主键列、外键列和索引上使用的列的数据类型。
Data type of primary key columns, foreign key columns, and columns used on indexes.
将其他两个表中的主键列都复制到联接表中。
Copy the primary key columns from each of the other two tables to the junction table.
一个允许将当前表中的列映射到被映射表的主键列的表格。
A grid that allows the mapping of the columns in the current table to the primary key columns in the mapped table.
Rails使用主键列id来完成各种记录保持和引用任务。
Rails USES the primary key column id for various recordkeeping and referencing tasks.
XMLToSQL创建完后，就可以设置主键列和目标列了。
After an XMLToSQL is created, primary key columns and target columns are set. The following sample class illustrates these steps.
获取一个值，该值表明集合中任何行的主键列是否包含指定值。
Gets a value that indicates whether the primary key of any row in the collection contains the specified value.
在清单5中，您有一个称为PO_ID的标准主键列(即订单id)。
In Listing 5, you have a standard primary key column called PO_ID (that is, purchase order ID).
还希望能够将数据写入除主键外（因为不能向主键列写入）的所有列。
You also want to be able to write data to all the columns except the primary key (because you cannot write to the primary key column).
表间关系、主键列和其他有关目标数据的信息也是通过元数据对象指定的。
Inter-table relationships, primary key columns, and other information about the target data is specified through the metadata object as well.
它设置两个访问器：访问器0仅包含主键列id，访问器1包含其他列。
It sets up two accessors: accessor 0 contains only the primary key column (ID) and accessor 1 contains other columns.
概念模型中的关联是一些属性表示基础数据库中的主键列和外键列的类型。
Associations in the conceptual model are types whose properties represent primary and foreign key columns in the underlying database.
获取一个值，该值指示集合中任何行的主键列中是否包含在对象数组中指定的值。
Gets a value that indicates whether the primary key columns of any row in the collection contain the values specified in the object array.
在运行insert语句之后，应用程序将永远都不知道放入了主键列中的是什么值。
The application never knows what value is put into the primary key column after running the INSERT statement.
输入以下列：cust_id （设置为主键列） ，name，address和phone。
Enter the following columns: cust_id (check key column), name, address, and phone.
但是请注意，我们不能修改您声明的主键列或任何其他的键列；在本例中，EMP _ ID是主键列。
Note, however, that we cannot update the primary key columns or any other key columns that you declare; in this case, EMP_ID is a primary key column.
在这种类型的表中，你定义了一个主键列，一个MIME类型列，和一个或多个通用列用来表示BLOB数据。
In this type of table, you define a primary key column, a MIME type column, and one or more generic columns as BLOB data.
从这段代码中可以看出，它定义了如何将一个方法映射到一个特定的表和列上，并指定哪些列是主键、查找方法，等等。
You see that it defines how to map each method to a particular table and column and specifies which columns are primary keys, finder methods, and so on.
前面我们提过，它们都有一个叫作id的列，并将该列作为主键。
As we mentioned above, they all have a column named ID as a primary key.
所以，如果在表中找到一个标识列，例如主键，则可以找到一种不同的解决方案。
So a different solution was found if an identifying column like a primary key is found in the table.
要转换一个已有的列成为一个主键，在图中点击这个列(类中的属性)。
To convert an existing column into a primary key, click on the column (property in the class) in the diagram.
为此，它的输入和输出链接将不同的列标识为主键）。
To do so, its input and output links identify different columns as keys.
主复制要求所有节点通过访问主节点来获得关于表、列和主键的字典信息。
Master replicates require all nodes to access the master node to obtain the dictionary information about tables, columns, and primary keys.
如果没有提供分区键，则默认地从主键的第一个列创建分区键。
If one is not supplied, one is created by default from the first column of the primary key.
例如，我们无法针对分区的列使用标识列或者时间戳，而分区列需要是主键的组成部分。
For example, one cannot use identity columns or timestamps for the partitioning column, but the partitioning column has to be part of the primary key.
对于主键和外键，只有非空列才能被列出和选择来定义这些键。
For primary and unique keys, only the not null columns are listed and can be selected to define these keys.
通过向导还可以添加更多的列、主键和外键等等。
You can add more columns, primary and foreign keys, and more with the wizard.
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