You must generate data for primary key columns.
您必须为主索引键资料行产生资料。
Such a constraint is intended to be used with primary key columns.
这种约束旨在用于主键列。
Data type of primary key columns, foreign key columns, and columns used on indexes.
主键列、外键列和索引上使用的列的数据类型。
Copy the primary key columns from each of the other two tables to the junction table.
将其他两个表中的主键列都复制到联接表中。
A grid that allows the mapping of the columns in the current table to the primary key columns in the mapped 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。
After an XMLToSQL is created, primary key columns and target columns are set. The following sample class illustrates these steps.
XMLToSQL创建完后，就可以设置主键列和目标列了。
Inter-table relationships, primary key columns, and other information about the target data is specified through the metadata object as well.
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。
Gets a value that indicates whether the primary key columns of any row in the collection contain the values specified in the object array.
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。
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.
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。
For example, this might happen when two ore more of the tables in the MQT have a referential integrity relationship defined and the join predicate is on their primary key - foreign key columns.
例如，当MQT中的两个或多个表定义了引用完整性关系并且联结谓词在它们自己的主键-外键列上时，就会出现这种情况。
The spatial table has a simple structure: a unique, integer column (objectid), one or more columns making up the primary key (copied from the source table), plus a single point-geometry column.
空间表的结构很简单：一个惟一的整数列(objectid)，组成主键的一个或多个列(从源表复制的)，以及一个点几何列。
Given the view's definition, you created a metadata object consisting of four columns and designated one column as the primary key for purposes of your work.
提供了视图定义后，可以创建由4个列组成的元数据对象，并指定一个列为主键以进行以后的工作。
Say your database schema contains three primary key table columns named "list_id", "ListId", and "list_value".
比方说你的数据库模式中包含三个作为主键的表列，分别命名为“list _ id ”、“ListId ”和“ list _ value ”。
Use the Index or primary key field to select the key columns that the Q Apply program uses to identify replicated rows and correctly order transactions.
使用Indexorprimary key字段来选择键列，QApply程序用以识别复制的行以及正确命令事务。
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.
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。
In other words, all columns that are part of the partitioning key must be present in the primary key or unique index definition.
换句话说，作为分区键一部分的所有列都必须出现在主键或惟一索引定义中。
Indexes are defined on all primary and foreign key columns to support efficient joins between the 12 tables.
全部主键和外键均定义了索引，来支持12个表之间有效的结合。
Note that this assumes that key columns are never updated; once a row exists, it is immutably tied to its primary-key value.
注意，这假设从不更新键列；一旦一行存在了，它的主键值就不变了。
If informational check constraints exist on the primary key column, you should explicitly specify informational check constraints on their corresponding foreign key columns. For example.
如果在主键列上存在信息检查约束，那么应该在它们相应的外键列上指定信息检查约束。
Each row of a table is uniquely identified by a primary key composed of one or more columns. This implies that a table may not contain duplicate rows.
表的每一行都是由一个唯一的主键标识的。主键由一列或多列构成。这意味表里不会有重复的行。
How can I do windowed query on multiple columns primary key?
我怎么能做窗口的多个列主键查询吗？
Accessor 1 contains all columns except the primary key.
访问器1包含除主键外的所有列。
In this type of table, you define a primary key column, a MIME type column, and one or more generic columns as BLOB data.
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。
Define a primary key to enforce uniqueness for values entered in specified columns that do not allow nulls.
定义主键以对不允许空值的指定列中输入的值强制唯一性。
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).
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 can attach unique constraints to columns that allow null values, whereas you can attach primary key constraints only to columns that do not allow null values.
可将唯一约束附加到允许空值的列，但是只能将主键约束附加到不允许空值的列。
Create a unique constraint to ensure no duplicate values are entered in specific columns that do not participate in a primary key.
创建唯一约束可确保在不参与主键的特定列中不输入重复值。
If you define a compound key, the order of columns in the primary key matches the order of columns as shown in the table in your diagram.
如果定义复合键，则主键中列的顺序与关系图的表中显示的列顺序匹配。
If a primary key consists of more than one column, duplicate values are allowed in one column, but each combination of values from all the columns in the primary key must be unique.
如果主键由一列以上组成，则其中一列允许重复值，但是主键中所有列的值的每种组合必须是唯一的。
A database table commonly has a column, or group of columns, that uniquely identifies each row in the table. This identifying column or group of columns is called the primary key.
一个数据表都有一个或者是若干个列，而每个表都可以有唯一标识列的字段，这些能够标识字段的列就是所谓的主键。
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