The application never knows what value is put into the primary key column after running the insert statement 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 foreign key column name in the source table is the same as the primary key column name in the destination table 源表中的外键列名与目标表中的主键列名相同。例如,外键列order . customerid
A relationship is analogous to a join path that might exist between primary and foreign key columns in a relational database 关系类似于可能存在于关系数据库中的主键列和外键列之间的联接路径。
Columns collection of the table . you can also define a primary key column for the table , and create and add 您也可以为表定义主键列,并且可以创建constraint对象并将其添加到表的constraints集合中。
If a table is in a transactional replication publication , you cannot disable any indexes that are associated with primary key columns 如果表位于事务复制发布中,则无法禁用任何与主键列关联的索引。
Primary keys are not required for tables in merge publications , but if a primary key column is present , it cannot be filtered 主键对于合并发布中的表并不是必需的,但如果存在主键列,则无法筛选该列。
An enforced relationship ensures each value entered in a foreign key column matches an existing value in the related primary key column 强制的关系确保在外键列中输入的每个值与相关主键列中的一个现有值匹配。
Is used for command execution , the provider will append extra columns to the result set for existing primary key and timestamp columns 用于命令执行时,提供程序将为现有主键列和时间戳列的结果集附加额外的列。
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。
Property is set to true . for example , if the primary key columns of a table being merged differ between the tables in the two 例如,如果所合并的表的主键列在两个dataset对象中的表之间有所不同,则将引发异常并引发mergefailed事件。