联合服务器可信上下文定义。
数据联合服务器接收对集成视图的请求。
The data federation server receives a request to the integrated view.
联合服务器使用映射信息来解决这些问题。
The federation server USES the mapping information to address those questions.
联合服务器数据源配置。
考虑是否需要在联合服务器上设置用户映射。
Consider whether you need to set up user mappings on the federation server.
联合服务汽车协会。
联合服务器应支持由多个请求者发起的并发请求。
The federated server should support concurrent requests initiated by multiple requesters.
联合服务器工作负载(事务量)对源系统的影响。
Impact of federation server workload (transaction volume) to sources.
确保在联合服务器上创建并启用了可信上下文对象。
Ensure that you have created and enabled a trusted context object on the federation server.
数据联合服务器负责接收定向到各种源的集成视图的查询。
The data federation server is responsible for receiving a query directed at an integrated view of diverse sources.
根据映射定义，联合服务器将联合查询拆分为多个子操作。
According to the mapping definition, the federation server breaks down the federated query into multiple sub operations. Multiple factors influence this step.
联合服务器是一个虚拟数据库，具有关系数据库的所有功能。
The federation server is a virtual database with all of the capabilities of a relational database.
联合服务器会将其接收到的每个请求的子操作转发到源系统。
The federation server forward for each request that it receives sub-operations to source systems.
联合服务器仅在处理从使用者接收到的请求时才会使用资源。
The federation server only utilizes resources when it processes a request that it receives from the consumer.
联合服务器还必须提供查询优化功能，以最高效地响应请求。
The federation server must also provide query optimization capabilities in order to respond to the request most efficiently.
数据联合服务器可以使用(为了集成)多个信息源提供的服务。
The data federation server can consume — in order to integrate — services provided by multiple information sources.
在源中执行一系列操作与在联合服务器上执行这些操作的性能影响如何？
What are the performance implications when executing a set of operations in the sources vs. the federation server?
联合服务器将请求转换为对应的SQL查询或视图定义，以支持服务。
The federation server transforms the request into the corresponding SQL queries, or view definitions, to support the service.
系统管理数据源支持哪些操作，哪些操作必须由联合服务器提供补偿机制？
What operations are supported by the systems managing data sources and which have to be compensated by the federation server?
在soa上下文中，使用者通过预定义的请求格式向联合服务器提交请求。
In the SOA context, the consumer submits a request via a predefined request format to the federation server.
假定已经配备了联合服务器基础设施，则使用最好的联合引擎会相对较为廉价。
It is relatively cheap if utilizing the best-of-breed federation engines, assuming a federated server infrastructure is in place.
作为数据联合服务器使用者的应用程序可以与单个虚拟数据源通过接口进行通信。
An application that is a consumer of the data federation server can interface with a single virtual data source.
有效管理并发访问的能力由数据联合服务器和所集成的源服务器的性能特征决定。
The ability to efficiently manage concurrent access is determined by the performance characteristic of the data federation server as well as the integrated source servers.
InfoQ：能否为我们简单介绍一下联合服务及其遇到的挑战和要解决的问题？
InfoQ: Could you give us a brief description of federation and which challenges it's addressing?
最后，验证联合服务器上的可信连接对象从建立连接之时起没有被禁用、放弃或改变。
Finally, verify that the trusted context object on the federation server has not been disabled, dropped, or altered since your connection was established.
我们进一步建议使用联合服务注册中心和存储库，为企业范围的管理和可重用服务的治理提供帮助。
We further recommend using a federated service registry and repository to assist enterprise-wide management and governance of reusable services.
这将对源系统的资源使用率造成负面影响，因为需要对来自联合服务器的子操作做出响应。
This impacts the resource utilization at the source systems negatively in that they need to respond to the sub-operations from the federation server.
在这个场景中，承租者部署了一种联合服务，它为该承租者自己的用户目录服务提供了接口。
In this scenario, the tenant deploys a federation service that interfaces with the tenant's own user directory service.
此外，很多组织将小部件用于直接商品化联合服务，可以将小部件设置为在工作前必须提供许可证密钥。
Additionally, many organisations use widgets to directly commercialise syndicated services; you can set up a widget to require a license key before it functions.
此外，很多组织将小部件用于直接商品化联合服务，可以将小部件设置为在工作前必须提供许可证密钥。
Additionally, many organisations use widgets to directly commercialise syndicated services; you can set up a widget to require a license key before it functions.
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