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- FOREIGN KEY约束不必预先删除。FOREIGN KEY constraints do not have to be dropped in advance.
- FOREIGN KEY约束所引用的表名。Is the name of the table referenced by the FOREIGN KEY constraint.
- Foreign language用中文怎么说?What is the Chinese word for foreign language?
- 新FOREIGN KEY约束引用的带括号的列。Is a column in parentheses referenced by the new FOREIGN KEY constraint.
- FOREIGN KEY约束引用的表所属的架构的名称。Is the name of the schema to which the table referenced by the FOREIGN KEY constraint belongs.
- 对基础表的FOREIGN KEY约束自动被禁用,并显示警告消息。The FOREIGN KEY constraint on the underlying table is automatically disabled and warning message is displayed.
- 无法更改用PRIMARY KEY或FOREIGN KEY约束定义的列的长度。You cannot change the length of a column defined with a PRIMARY KEY or FOREIGN KEY constraint.
- 在设计数据库和应用程序时应考虑强制FOREIGN KEY约束的开销。Consider the cost of enforcing FOREIGN KEY constraints when you design your database and applications.
- 表的FOREIGN KEY约束不允许删除操作,约束冲突错误将把控制传递给A FOREIGN KEY constraint on the table does not allow the delete operation to succeed, and the constraint violation error passes control to the
- FOREIGN KEY约束要求列中的每个值在所引用的表中对应的被引用列中都存在。FOREIGN KEY constraints require that each value in the column exists in the corresponding referenced column or columns in the referenced table.
- 作为表定义的一部分而定义的FOREIGN KEY约束,它强制使表间具有恰当的关系。FOREIGN KEY constraints defined as part of a table definition that enforce proper relationships between tables.
- 计算列不能用作DEFAULT或FOREIGN KEY约束定义,也不能与NOT NULL约束定义一起使用。A computed column cannot be used as a DEFAULT or FOREIGN KEY constraint definition or with a NOT NULL constraint definition.
- 但是,实际的FOREIGN KEY约束数会受到硬件配置以及数据库和应用程序的设计的限制。Nevertheless, the actual number of FOREIGN KEY constraints is limited by your hardware configuration and by the design of your database and application.
- ms-Exch-Foreign-Forest-Public-Folder-Admin-USG-Sid属性在功能上类似于下列现有属性The ms-Exch-Foreign-Forest-Public-Folder-Admin-USG-Sid attribute is similar in functionality to the following existing attributes
- 删除FOREIGN KEY约束可消除外键列与另一表中相关主键列或UNIQUE约束列之间的引用完整性要求。Delete a FOREIGN KEY constraint to remove the requirement for referential integrity between the foreign key columns and the related primary key, or UNIQUE constraint, columns in another table.
- 如果DELETE语句违反了触发器,或试图删除另一个有FOREIGN KEY约束的表内的数据被引用行,则可能会失败。Table variable. The DELETE statement may fail if it violates a trigger or tries to remove a row referenced by data in another table with a FOREIGN KEY constraint.
- 如果FOREIGN KEY约束是源数据库特有的,但在复制过程中未禁用该约束,则它们可能会无谓地妨碍向目标数据库输入新数据。If the FOREIGN KEY constraints are specific to the source database but are not disabled during replication, they may unnecessarily prevent new data from being entered in the destination database.
- 源表的外键不能标记为is_not_trusted(可在sys.foreign_keys目录视图中查看),除非目标表的相应外键也标记为is_not_trusted。The foreign keys of the source table cannot be marked is_not_trusted (viewable in the sys. Foreign_keys catalog view), unless the corresponding foreign key of the target table is also marked is_not_trusted.
- 对比分析理论于1947年由美国语言学家Charles Fries在他的Teaching and Learning English as a Foreign Language一书中提出。The theory of contrastive analysis was first posited by Charles Fries, an American linguist, in his book Teaching and Learning English as a Foreign Language published in 1947. Ten years later, another American linguist Robert Lado wrote Linguistics across Culture and put the theory of contrastive analysis into practice.
- “外地终止注册证明书”（foreign certificate ofdeletion），就船舶来说，指由香港以外地方的有关主管当局发出的证明书或其他文件，"""foreign certificate of deletion"", in relation to a ship, means a certificate or other document issued by the relevant authority of a place outside Hong Kong and certifying or stating,"
