启用联合节点。
In DB2, a federated system is used.
在DB 2中，使用的是联合系统。
为什么使用联邦过程？
Are federated procedures really necessary?
联邦过程真的是必要的吗？
Profile is federated or a node is removed.
联合概要或删除节点。
Creating and dropping federated procedures.
创建和删除联邦过程。
Figure 2 shows the federated system configuration.
图2展示了这个联邦系统的配置。
In such a case, the results are not federated.
这种情况下，结果将不进行联邦。
Federated procedures only return the first result set.
联邦过程只返回第一个结果集。
Federated systems do not support certain data mappings.
联邦系统不支持某些数据映射。
DB2's federated capabilities provide a solution for us.
DB2的联邦功能为我们提供了一个解决方案。
Described above are the benefits of federated procedures.
上面讨论的是联邦过程的好处。
Your federated setup hides the origin of the data itself.
联邦设置会隐藏数据本身的来源。
Federated procedures are invoked using the CALL statement.
使用call语句调用联邦过程。
This is a prerequisite for using federated trusted contexts.
这是使用联合可信上下文的先决条件。
The basic federated repository configuration is now complete.
现在已经完成了基本的联合存储库配置。
Federated procedures can be dropped using the drop statement.
可以使用drop语句删除联邦过程。
The federated server needs to perform this operation locally.
联邦服务器需要在本地执行该操作。
However, this article focuses on its federated data services.
不过，本文主要讨论联邦数据服务。
The configured user repository must be federated repositories.
所配置的用户存储库必须为联合存储库。
Some integration scenarios may benefit from federated governance.
一些集成场景可能得益于联合控制。
The following sections examine these federated objects one by one.
接下来的几个小节逐个研究这些联邦对象。
For example, consider a federated union query across three sources.
例如，考虑一个跨三个数据源的联邦联合查询。
The return value becomes the first parameter of the federated procedure.
返回值变成联邦过程的第一个参数。
Figure 3 shows the federated system configuration that follows this step.
图3展示了遵循这个步骤的联邦系统配置。
So far, this article has discussed the externals of federated procedures.
到目前为止，本文已经讨论了联邦过程的外部。
Asynchrony can significantly improve the performance of federated queries.
异步可以显著提高联邦查询的性能。
Federated database and nicknames are supported for application development.
对应用程序开发支持联邦数据库和昵称。
Integration of external resources using the new federated content component.
使用新的联邦内容组件集成外部资源。
The federated server retrieves this information during nickname registration.
联邦服务器在昵称注册时获取这种信息。
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