The issue deals with service contract design.
这一问题关心服务契约的设计。
XML namespaces used by the service contract documents.
服务契约文档使用的XML名称空间。
The vacation request form describes a service contract.
休假申请单描述了一个服务契约。
Users do not even have to have a wireless service contract.
用户甚至不需要签订无线网络服务合同。
Role bindings specify what role the part plays in a service contract.
角色绑定指定了该部分在服务契约中扮演什么角色。
Name and description of the interfaces and the XML types used by the service contract.
接口的名称和描述以及服务契约使用的xml类型。
A service contract is an important aspect that helps determine an initiative's success.
服务契约是帮助确保活动成功的一个重要方面。
Note - This pattern can be applied regardless of whether the service contract is decoupled.
不论服务是否解耦，该模式都能被应用。
This might involve using their forums for support or establishing an external service contract.
这也许涉及使用他们的论坛获取支持，或者建立一个外部服务合同。
Strict - Any compatible or incompatible change results in a new version of the service contract.
严格——所有兼容或不兼容的更改都将产生服务契约的新版本。
Also, the service contract should be at the specification level (not at the implementation level).
而且，服务契约应处于规范级别(而非实现级别)。
The service contract is the foundation of your SOA initiative, so choose the attributes carefully.
服务契约是SOA活动的基础，因此要谨慎地选择各个特征。
Then there are those people who may just want the iPhone 3G S without a service contract from AT&T.
然后还有的人可能只想要iPhone3GS手机，不想要AT&T的服务合约。
The role bindings indicate which part of the service provider plays which role in the service contract.
角色绑定指示出服务提供者的哪一个部分在服务契约中扮演哪一个角色。
These constraints indicate what the service contract is intended to accomplish and how to measure success.
这些约束指出服务契约要完成的是什么，以及如何衡量是否成功。
I believe this is inappropriate, because the WSDL is supposed to represent the published service contract.
我认为这是不合适的，因为WSDL应该表示公布的服务合约。
Infoq: in your book you are equating service interface to service contract and suggest to use WSDL for both.
InfoQ：您在这本书里将服务接口和服务契约等同起来，并建议二者都使用WSDL。
It contains service adapters, which implement the service contract and expose its functionality to endpoints.
它包含了服务适配器，该适配器实现了服务契约，并将其功能暴露给终结点。
Remember when it felt really special to get a free basic cell phone when you signed a two-year service contract?
还记得你如果签一个为期两年的服务合约，就可以得到一部免费的蜂窝电话的那种特别感觉吗？
Users will need to sign up for a two-year service contract with a data plan and pay $199.99 for the first device.
顾客需要为自己购买的第一台设备签一个为期两年的数据服务合同并支付199.99美元。
Some of the important information you might find in a service contract are described below in the next few subsections.
接下来我们将对服务契约中可能出现的一些重要信息进行描述。
If however the point of interaction is a higher level business service contract, the individual integration points become less relevant.
然而，如果交互点是一个高层业务服务契约，那么单独的集成点就变得不那么相关了。
This is, perhaps, because the business service contract is incomplete or that there is only an informal sketch of the business requirements.
也就是说，或许因为业务服务契约不完全，或者只有业务需求的概略信息。
Provider contracts - Provider contracts are the kind of service contract with which we are most familiar -think WSDL plus XML Schema plus WS-Policy.
提供者契约(Provider contracts)——提供者契约是我们最为熟悉的一种的服务契约，参考WSDL +XMLSchema +WS - Policy。
Consumer-driven contracts comprise a foundation of asserted behaviour against which we can assess the likely impact of changes to a service contract.
消费者驱动的契约提供了一个已断言行为的基础，我们可以根据它对一个服务契约的变动产生的可能的影响进行评估。
For instance, they wanted to maintain multiple versions of a service contract, or handle the incoming XML directly, without it being converted to an object first.
例如，他们想要维护一个Service契约的多个版本，或者直接处理得到的XML，而不用先转化成对象。
When SOA was considered an integration technology, developers and even architects used to think about service interface as of a service contract with the outside world.
在SOA被认为是一种集成技术的日子里，开发者(甚至连架构师)都把服务接口认为是与外部世界签订的服务契约。
Loose - Any incompatible change results in a new version of the service contract and the contract is designed to support backwards compatibility and forwards compatibility.
松散——所有不兼容的更改导致服务契约的新版本，且服务契约的设计既支持向后兼容，也支持向前兼容。
A service contract defines the terms, conditions, and interaction rules that interacting participants [service providers and consumers] must agree to (directly or indirectly).
服务契约定义了交互参与者(服务提供者与服务消费者)必须(直接或间接)达成一致的术语、条件和交互规则。
According to the figure, the essence of the SOA style is the decoupling of service consumer and service provider via the service contract, ESB messaging, and the service registry.
如图3所示，SOA风格的本质是通过服务契约、ESB消息传输和服务注册达到服务消费者和服务提供者之间的解耦。
应用推荐