In other words, asynchrony enables all remote operations except for the processing of returned data by the federated server to proceed concurrently.
换句话说，异步使得联邦服务器的所有远程操作都可以并发地进行，只有对返回数据的处理除外。
In addition to managing the federation, the federated server is also a full-function relational database with the capability to store and manage local data.
除了管理联邦以外，联邦服务器还是一个功能完整的关系数据库，具有存储和管理本地数据的能力。
If you want the federated server to push down the evaluation of a function to a relational data source, you must use a function mapping for that data source.
如果您希望联邦服务器将函数的计算下推到一个关系数据源，那么必须使用那个数据源的一个函数映射。
The federated server can compensate for the lack of function at the data server, but doing so might require the operation to take place at the federated server.
虽然联邦服务器可以弥补数据服务器上的功能缺失，但这要求操作发生在联邦服务器上。
The federated server communicates a remote request for data to the remote relational data source through an SQL statement in the native SQL dialect of the data source.
联邦服务器通过数据源本地SQL方言中的 SQL语句将对数据的远程请求发送到远程关系数据源。
This federated server transparently accesses the data in DB2 for z/OS through nicknames, while providing the desired catalog views and accepting the syntax for method invocations.
这个联邦服务器透明地通过昵称访问DB2for z/OS中的数据，同时提供所需的编目视图和接受方法调用语法。
The BOOKSTORE1 table at the federated server contains the following data.
联邦服务器上的BOOKSTORE1表包括如下数据。
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。
If the remote tables have restrictions on the data such as check constraints, you can convey these restrictions to the federated server using informational check constraints.
如果远程表在数据上有检查约束，那么可以使用信息检查约束将这些约束传递到联邦服务器。
Registering each database as a server allows data on each of these remote databases to be accessed from the federated system.
通过将每个数据库注册为一个服务器，可以使这些远程数据库上的数据能够从联邦系统访问到。
Server attributes on the federated server store the characteristics of each data source.
联邦服务器上的服务器属性存储每个数据源的特征。
To read or modify data from remote data sources, you submit SQL queries that reference nicknames to the federated DB2 server.
为了阅读或修改远程数据源中的数据，您提交引用了昵称的SQL查询给联邦DB 2服务器。
After you register the wrapper libraries with the federated system, register each data source as a server.
在将包装器库注册到联邦系统之后，将每个数据源注册为一个服务器。
It is required to allow queries to reference those functions on the data source that do not have corresponding functions on the federated server.
为了允许查询在联邦服务器上没有相应函数的数据源上引用那些函数，就需要函数模板。
Server attributes on the federated database store the characteristics of each data source.
联邦数据库的服务器属性存储着各数据源的特征。
Return of data to the federated server sufficient to fill a single ATQ buffer.
将足以填充一个AT Q缓冲区的数据返回到联邦服务器。
Since the remote procedure referenced by the federated procedure is not managed by the federated server, the level chosen cannot be enforced during the execution of the procedure at the data source.
因为联邦过程所引用的远程过程不由联邦服务器进行管理，所以当过程在数据源上执行时无法强制实施选择的级别。
The federated server automatically generates distributed requests to multiple data sources in response to a single application SQL statement.
为响应一个应用程序SQL 语句，联邦服务器自动生成到多个数据源的分布式请求。
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。
When an application submits a query to the federated system, the federated server identifies the relevant data sources, and develops a query execution plan for obtaining the requested data.
当应用程序向联邦系统提交一个查询时，联邦服务器识别相关数据源，并生成一个用于获得被请求数据的查询执行计划。
After you register the wrapper libraries with the federated database, each data source must be identified to the system as a server.
向联邦数据库注册了包装器库之后，每个数据源都必须被系统识别为一个服务器。
The federated database relies on server attributes to ensure that the capabilities of each data source are properly exploited.
联邦数据库依靠服务器属性来确保各数据源的功能得到了合理利用。
Internal server attributes are key factors in determining the differences in functionality that can be supported at the federated system compared with remote data sources.
内部的服务器属性是决定联邦系统与远程数据源各自所支持的功能的不同之处的关键因素。
As an example of compensating for SQL limits, consider that the federated server might allow the use of larger character strings than other remote data sources allow.
举个补偿SQL限制的例子，考虑联邦服务器可能允许使用大于其他远程数据源所允许的长度的字符串。
Compensate for SQL limitations at the data source by processing parts of a distributed request at the federated server.
在联邦服务器上处理一部分分布式请求，弥补SQL在数据源上的限制。
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。
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。
In many cases the federated server needs to compensate for the differences in the implementation of these data sources.
在许多情况下，联邦服务器需要处理这些数据源实现的差异。
There are at least two column options that you can set to improve the federated server? S understanding of the remote data and encourage more operations to be pushed down.
至少可以通过设置两个列选项来提高联邦服务器对远程数据的理解，并鼓励下推更多的操作。
This server option specifies the maximum number of concurrent requests that can be simultaneously active on behalf of a single federated query to the given data source.
该服务器选项指定可代表一个联邦查询向特定数据源同时激活的并发请求的最大数量。
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