Once you've gained access to a remote data source, the next issue is data transfer.
一旦获得了对远程数据源的访问权限，下一个问题就是数据传输。
In a federated system a server represents a collection of data on the remote data source.
在联邦系统中，服务器表示远程数据源上的一个数据集合。
Bob's requests are also accurately audited at the remote data source under his own identity.
Bob的请求也在远程数据源中自己的身份下进行审核。
Consider setting this server option to push as much work as possible to the remote data source.
考虑设置这个服务器选项，以便将尽可能多的工作下推到远程数据源。
There is usually no index or statistics information provided at the remote data source on a view.
远程数据源上通常不提供关于一个视图的索引或统计信息。
This dialect might offer more functionality than the SQL dialect supported by a remote data source.
与远程数据源上支持的SQL方言相比，这种方言可以提供更多的功能。
The server definition is used to access data from the remote data source through what is called a nickname.
服务器定义用于通过所谓的别名从远程数据源访问数据。
"Pushing down" an operation — allowing it to take place on the remote data source — can be very beneficial.
“下推”操作，即让操作发生在远程数据源，是很有益的。
This property denotes the name of the server or the remote data source where that operation will be performed.
这个属性表示将在那里执行操作的服务器或数据源的名称。
You can create a mapping for each WebSphere Information Integrator user to an ID and password on a remote data source.
可以为每个WebSphereInformation Integrator用户创建到远程数据源上的ID和密码的映射。
Consider the effect of a selective predicate being evaluated at the federated server instead of at the remote data source.
考虑在联邦服务器上，而不是在远程数据源上执行的选择谓词的影响。
As noted earlier, it may require retrieving the data from the remote data source or consolidating the processing results locally.
正如前面指出的，可能需要从远程数据源检索数据或在本地合并处理结果。
Recall that each SHIP operator indicates a point in the execution plan at which a query or request is sent to a remote data source.
还记得吗，每个ship操作符都意味着在执行计划中有一个地方要将一个查询或请求转发到一个远程数据源。
The identity assertion object on the remote data source defines the trust attributes for establishing a trusted outbound connection.
远程数据源上的身份断言对象为建立可信出站连接定义信任属性。
Unavailable - the remote data source is dropped or stopped, or there are network problems between the data source and the federated server.
不可用——远程数据源被删除或停用，或者数据源与联邦服务器之间存在网络故障。
Similarly, you can determine whether any GROUP BY or DISTINCT operators being performed locally could have been evaluated on the remote data source.
类似地，您可以判断在本地执行的任何GROUPBY或DISTINCT操作符是否可以在远程数据源上执行。
In most production environment, these translate a WebSphere Information Integrator user id and password to a valid account on the remote data source.
在多数生产环境中，用户映射将WebSphereInformation Integrator用户ID和口令翻译成有效的远程数据源帐户。
If the remote plan does not appear optimal, the system administrator for the remote data source should be contacted to investigate the performance issue.
如果远程计划不是最优的，那么应该与远程数据源的系统管理员联系，以便调查性能问题。
This server attribute tells the federated server whether the collating sequence is the same on both the remote data source and the local federated server.
这个服务器属性告诉联邦服务器远程数据源和本地联邦服务器上的排序序列是否相同。
It provides a DB2 relational model for the remote data and assists the federated engine in query processing by sending sub-queries to the remote data source.
它提供了远程数据的DB 2关系模型，并通过向远程数据源发送子查询以帮助联邦引擎实现查询处理。
The requester can call the Web service without knowing any details of the implementation, the location of the remote data source, or the communication protocols.
请求者无需知道任何实现细节、远程数据源的位置或通信协议即可调用Web服务。
In most production environments, administrators also define user mappings to translate a DB2 II user id and password to a valid account on the remote data source.
在大多数生产环境中，管理员还会定义用户映射(user mapping)，以便将DB 2II用户ID和密码翻译成远程数据源上的有效帐户。
If the remote data source cannot handle the null value in a host variable or parameter marker, any function that involves binding a nullable value has to be evaluated locally.
如果远程数据源不能处理主机变量或参数标记符中的NULL，那么任何需要绑定一个可以为空的值的函数都必须在本地计算。
For error message SQL1822N, the content of the error message received from a remote data source often gets truncated. You can find the complete error message in the db2diag.log.
对于错误消息SQL 1822n，从远程数据源接收到的错误消息内容常常被截断。
If the user ID and password you use to connect to the federated database are the same as those you use to access the remote data source, you do not need to create a user mapping.
如果用于连接到联邦数据库的用户ID和密码与用于访问远程数据源的用户ID和密码相同，那么不需要创建用户映射。
For a federated query to benefit from asynchrony the operations (queries) pushed down and executed asynchronously on the remote data source (s) must have the following properties.
联邦查询要从异步中获益，下推到远程数据源并在远程数据源上异步执行的操作(查询)必须有以下特征。
This approach requires the federated system to retrieve a superset of the data referenced by the predicate from the remote data source, and then filter it locally against the predicate.
这种方法要求联邦系统首先从远程数据源获取由谓词引用的数据的一个超集，然后通过谓词在本地对其进行过滤。
In most production environments, administrators also define user mappings to translate a WebSphere Information Integrator user id and password to a valid account on the remote data source.
在大多数生产环境中，管理员还定义了用户映射，将DB 2Information Integrator用户ID和口令转换成远程数据源中的有效帐户。
WebSphere Information Integrator can simulate functions not natively supported by a given remote data source, offering programmers additional capabilities that would otherwise be unavailable.
DB 2Information Integrator可以模拟无法通过给定远程数据源获得本地支持的功能，为编程人员提供使用其他方式无法获得的额外能力。
You configure this feature by creating a trusted context object on the federation server and an identity assertion object (DB2 trusted context or Oracle proxy user) on the remote data source.
要配置该功能，可以在联合服务器上创建一个可信上下文对象，在远程数据源上创建一个身份断言对象(DB2可信上下文或Oracle代理用户)。
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