服务实现模型工件-表示服务实现层的工件，比如，服务运营或服务端点。
Service implementation Model artifact - artifacts representing service implementation layer, for example, service Operation or service Endpoint.
只要command实现的输入输出保持不变，业务逻辑中的更改不必去影响Web服务实现层。
As long as the inputs and outputs of the command implementations remain constant, changes in business logic do not need to impact the Web services implementation layer.
服务实现层(Service implementation layer)——负责将现有的(可通过后端适配器访问的)服务编排成客户所需的服务。
Service implementation layer - responsible for orchestration of existing services (accessible through back-end adaptors) into services required by customers.
在逻辑层中，可以将实际的服务实现作为ServiceComponentArchitecture (SCA)组件调用。
The actual service implementations are invoked as service component Architecture (SCA) components in the logic layer.
事实上，Web应用程序层可能完全由一个或多个Web服务实现，这样应用的URL只会把浏览器组件暴露给用户。
Indeed, the Web application layer might be realized completely by one or more Web services such that the application URL would only give the user a browser component.
图1显示了服务实现的n层分层体系结构以及这些模式的应用位置。
Figure 1 shows the n-tier layered architecture for service implementation and where these patterns are applied.
相似地，系统层可以作为一个API、包装器类集合或者Web服务实现。
Similarly, your system layer may be implemented as an API, a collection of wrapper classes, or as Web services.
实际上，它需要引入一个抽象层，以允许数据层的更改而不影响服务实现或将这种影响降到最低。
It has to, in effect, introduce a layer of abstraction, allowing for changes in a data layer with no or minimal impact to service implementations.
此层通过将点对点连接与接口本身分离，从而对服务实现虚拟化。
This layer virtualizes the services by decoupling the point-to-point connections from the interfaces themselves.
将订阅者ID从表示层传递到业务层，将从两个方面影响业务服务实现。
Passing the subscriber ID from the presentation to the business layer affects the business service implementation in two ways.
任意服务实现堆栈层中的变更都可能导致服务功能的回归。
A change within any layer of a service implementation stack could cause a regression in the service capabilities.
图6展示了集成层与服务公开层、提供者创建层、现有提供者、服务规范和服务实现的关系。
Figure 6 shows the relationship of the encompassing integration layer to the service exposure layer, the provider creation layer, existing providers, service specifications, and service realizations.
服务层的目的是分离服务供应与服务实现。
The purpose of the service tier is to separate service provision from service implementation.
服务层的目的是分离服务供应与服务实现。
The purpose of the service tier is to separate service provision from service implementation.
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