Primary Key

You must specify the primary key for a table.

您必须指定主键的表.

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Check to be sure the proposed primary key field ( s) could never contain duplicate values.

请检查确认建议的主键字段永远不包含重复值。

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Both entity integrity and referential integrity based on primary key are two important kinds of constraint.

求解关系模式的候选键是关系模型设计的基础，基于关键字的实体完整性和引用完整性是最基本的约束，也是最重要的约束。

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This index requires each value in the primary key to be unique.

该索引要求主键中的每个值都唯一.

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The primary key can't be a primitive type.

主类型不能成为主键.

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A primary key column is identified by a primary key symbol in its row selector.

主键列由其行选择器中的主键符号标识.

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You must select a primary key field for accessing the database table.

要访问数据库表，必须选择某个主关键字字段。

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For example, if you are creating a Customer table and the CustomerID is marked as not null, then when you define the primary key, CustomerID will show as a candidate column.

例如，如果您要创建一个Customer表并且CustomerID被标记为not null，则当您定义主键时，CustomerID将会显示为备选列。

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The "id" column will be set as the primary key and will be auto-incrementing.

“id”列将会被设置为主键，并且自增。

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When the primary key violation error occurs, the entire transaction is rolled back and no rows are added to the destination table.

在发生了主键冲突错误时，回滚整个事务并且不会将任何行添加到目标表。

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A primary key is a column a unique value for each row.

主键是指每记录行带有唯一值的栏目.

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Right-click the row selector for the column and select Set Primary Key.

右击该列的行选择器,然后选择“设置主键”.

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Choose two fields from the database table that comprise the primary key.

从数据库表中选择构成主关键字的两个字段.

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RemoveExceptionRemove an EJB object identified by its primary key.

删除由主键标识的EJB对象.

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The element defines the primary key of the main table.

元素定义了主表格中的主键.

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Note: The primary key field is numeric by default.

注意: 主键字段默认为数值型.

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Ployster is a primary chain contains the axetil ensimology of the key.

聚酯是主链上含有酯键的矮不不合子化不合物的总称.

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The ID is set to auto-increment and is used as the primary key.

ID 被设置为自动增量并作为主键。

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It is the primary key technical link in natural language processing. The current technology of Chinese word segmentation is working for Chinese text.

它是自然语言处理过程中首要的技术环节，其重要性不言而喻。目前的中文分词技术主要针对中文文本进行分词。

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You'll create the ID field as an autoincrement primary key.

我们将创建ID字段作为一个autoincrement primary key。

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Gets the row specified by the primary key value.

获取包含指定的主键值的行.

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Click the first icon to add the primary key attribute.

点击工具栏中的第一个图标以添加主属性。

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Defining the table's primary key ( after creating columns ).

在创建列后 定义表 的主键.

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The primary key can be specified only for the top root view.

不可以在一列或多列上同时有主键和唯一约束.

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Right-click the column you want to set as the primary key.

右击要将其设置为主键的列.

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Accessor 1 contains all columns except the primary key.

访问器1包含除主键外的所有列.

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Recall that clients were defined with a primary key on the client ID column, so attempting to import duplicate rows will fail.

记得clients对客户ID列定义了一个主键，因此在尝试导入相同行时将失败。

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A wizard will open and, after clicking the Finish button, will show you the primary key in the table with a key icon next to the column.

将会打开一个向导，并且在点击Finish按钮后，将用列旁边的一个钥匙图标来显示表中的主键。

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The use of autoincrement as a primary key is not recommended in a database that is going to be synchronized.

不建议在要进行同步的数据库中将自动增量用作主键。

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However, you can change the order of columns after the primary key is created.

但是, 可在创建主键后更改列的顺序.

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