You cannot define triggers for external tables.
不能为外部表定义触发器。
You cannot use multiple external tables in the main query.
不能在主查询中使用多个外部表。
Manipulating built-in opaque data types in external tables.
处理外部表中的内置opaque数据类型。
For the best results with external tables, follow these practices.
使用外部表时要获得最佳结果，请遵循以下最佳实践。
Be aware of the following restrictions on the use of external tables.
注意外部表的以下使用限制。
Case 5: Having stored procedure using dynamic SQL and external tables.
用例5：采用使用动态sql和外部表的存储过程。
The data files associated with the external tables will not undergo any changes.
与这些外部表关联的数据文件不会受到任何更改。
Primary: all supported operations on external tables are allowed on the primary server.
主服务器：在主服务器上允许外部表上的所有受支持操作。
Reduction of return data based on better definition of metadata (using External tables).
根据更好的元数据定义减少返回数据(使用外部表)。
Similarly, other UDTs, like opaque or complex, can also be used with the external tables.
类似地，其他UDTs（比如opaque和complex）也可用于外部表。
Creation of external tables also includes a USING clause in addition to the column specification.
除列指定之外，外部表的创建还包含一个using子句。
Pipes in external tables can be used to transfer data between two instances and save on the disk space.
外部表中的管道可用于在两个实例之间转移数据并在磁盘空间上保存数据。
Operations on external tables are not logged. Thus transaction support is not enabled on external tables.
外部表上的操作载入日志，因此，外部表上也不能实现事务支持。
External tables provide a normal table interface to data files that reside in the underlying operating system.
外部表对驻留在底层操作系统中的数据文件提供一个普通的表界面。
External tables can be created with the columns of all the data types supported by the regular base table in IDS.
外部表可以使用IDS中的常规基表支持的所有数据类型的列创建。
The introduction of external tables within the IDS server fulfils the requirement and provides better performance.
IDS服务器中引入的外部表满足了这个需求，并且改善了性能。
External tables provide an easy and intuitive way to perform the unload and load operations through the SQL interface or stored procedures.
外部表特性提供了一种简单直观的方法来通过SQL界面或存储过程执行加载和卸载操作。
The paper analyzes the pneumatic pump for SN-ratio test by use of the direct-product of internal and external tables , and has determined the optimal parameters.
采用内、外表直积法，对风动水泵进行了SN比试验分析，确定了其最佳参数组合。
The permissions used to access external tables is governed by the user access privileges on the external table by IDS as well as the data file permissions managed by the operating system.
用于访问外部表的权限由IDS通过外部表上的用户访问特权治理，还受到由操作系统管理的数据文件权限的治理。
IBM TSOM USES range partitioning for event tables, so you can detach a partition, archive the detached partition on an external storage, or drop the detached partition.
IBMTSOM使用范围分区实现事件表，所以您可以分离一个分区，将分离的分区保存在一个外部存储上，或者删除所分离的分区。
These catalog tables are needed to store the table options, data files, and external columns discussed in this article.
这些目录表用于存储本文讨论的表选项、数据文件和外部列。
These tables are the external code page conversion tables used to translate values between various code pages.
这些表是用于在不同代码页之间转换值的外部代码页转换表。
This means ij, the database Explorer, and a client application external to Eclipse could all connect to and query the tables in the database.
这意味着ij、DatabaseExplorer和Eclipse外部的客户机应用程序都可以连接和查询该数据库中的表。
The developers starts from creating tables or data entities using the built-in database or an external data source.
开发者首先要使用内建的数据库或者外部数据源创建表或者数据实体。
The developers starts from creating tables or data entities using the built-in database or an external data source.
开发者首先要使用内建的数据库或者外部数据源创建表或者数据实体。
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