The Access Layer provides the Information Consumers?
访问层（Access Layer）向信息消费者提供了什么呢？
The access layer, which is the lowest level of the Cisco three tier network model, eures that packets are delivered to end user devices.
访问层，这是思科的最低水平三层网络模型，欧元，数据包交付给最终用户设备。
Along with the top-down network convergence to the "post network intelligentize era", the access layer network evolution should be emphasized.
自上而下的网络融合不断推进，“后网络智能化时代”接入层网络演进将是部署的重点。
The data access layer is responsible retrieving and manipulating data stored in enterprise information systems (EISs).
数据访问层负责对存储在企业信息系统(EIS)中的数据进行存取等操作。
Finally, the data access layer is a persistent data store, such as a database or file storage.
最后，数据访问层是持久化的数据存储，比如数据库或文件存储。
The link layer refers to the device drivers providing access to the physical layer, which could be numerous mediums, such as serial links or Ethernet devices.
链路层是指提供对物理层访问的设备驱动程序，这可以是各种介质，例如串口链路或以太网设备。
For quick prototyping efforts it is acceptable to combine the database access in the view layer, compromising the strict separation of data from view.
为了快速开发原型，将数据库访问合并到视图层，打破数据与视图严格分离的限制，这是可以接受的。
The power of this layer is in separating data access code from the business logic for disparate data store technologies.
该层的作用在于针对不同的数据存储技术，从业务逻辑中分离数据访问代码。
The data access layer provides a semantic data store, a user profile, and the rules database.
数据访问层提供了一种语义数据存储、一个用户个人文件以及规则数据库。
Developers must write code to implement the data access layer, including optimizing SQL queries, caching results to optimize performance, without compromising an application's footprint.
开发人员必须编写代码来实现数据访问层，包括优化SQL查询、缓存结果以优化性能，而不会损害应用程序的规模。
If a data access layer is used, the code might be consolidated there and hidden from the using application.
如果使用数据访问层，代码将整合到其中，对于使用的应用程序是不可见的。
The code in a layer can only access the layer beneath it, and only through an interface (see Figure 3).
某个层的代码能且只能通过接口访问该层(如图3所示)。
To configure the data layer and the tools that access the database for your application.
为了配置数据层以及应用程序用于访问数据库的工具。
The data access layer can also act as an integration point to link with other systems, including being a client of other Web services.
数据访问层还可以作为连接其他系统的集成点，可以成为其他Web服务的客户端。
The pureQuery data access layer with the specified interface name and suggestions for APIs for each SQL statements will be generated in one shot.
可以轻松地生成带有指定的界面名称和每个SQL语句的建议API 的pureQuery数据访问层。
This is a specific implementation of the Repository class for Service Registry, which provides the primary interface to the data access layer.
这个类是服务注册中心Repository类的一个具体实现，它为数据访问层提供了基础的接口。
The application's main form, "Form1," is in the Presentation layer. Since Form1 is part of the Presentation layer it must access the business layer through its interface (see Figure 4).
应用的主窗体，“Form1”位于表现层，它必须通过其接口访问业务层(如图4)。
We had properly isolated the data access layer, simplifying the optimization of queries (which had sometimes snuck into the business logic on previous projects).
我们适当的将数据访问进行了分层，简化了查询的优化（在之前的项目中数据访问有时会混合在业务逻辑中）。
Then you need to put some marshalling code atop that to provide an access layer to the front end.
然后，需要在那些类之上放置一些编组代码，以便为前端提供一个访问层。
The services that create, access and maintain these data groupings constitute the data manipulation layer of the described architecture.
创建、访问和维护这些数据分组的服务构成了所述体系结构的数据操作层。
The Model can be seen as the data-access layer, where the application interacts with any databases and information sources.
这里的模型可以看作数据访问层，应用程序在这里与其他数据库和信息源交互。
SCA moves many of the details of access technology, implementation, and protocols to the middleware layer - away from the business logic.
SCA将业务逻辑中有关访问技术、实现和协议的大量细节移动到中间件层中。
The access services layer extends backend programming model and APIs out to the client.
访问服务层可以将后端编程模型和API向外扩展到客户端。
However, while the DAL cleanly separates the data access details from the presentation layer, it does not enforce any business rules that may apply.
不过，即使DAL将数据访问的细节从表示层中分离出来了，可它却不能处理任何的业务规则。
This is where all business rules are applied as data passes from the Presentation Layer (UI), through the business Layer to the data Access Layer, and back again.
当数据从表示层(ui)传递过来的时候，全部的业务规则都在这里执行，通过业务层到数据访问层，然后再倒过来。
First we'll enhance the information access and distribution architecture by adding the connectivity and interoperability layer shown in Figure 4.
首先，我们将通过添加如图4所示的连接和互操作层，从而增强信息访问和分布体系结构。
Business rules are centralized into the business logic layer that serves as an intermediary for data exchange between the presentation layer and the data access layer.
业务规则可以集中到业务逻辑层，该层充当表示层和数据访问层之间的数据交换的中间层。
The core layer provides a foundation upon which you build the middle layer with access, audit, and cryptographic controls.
核心层可提供用于构建具有访问、审核和加密控制的中间层的基础。
These underlying data access calls are thus consolidated in the data access layer and hidden from the business logic.
这些底层数据调用整合到数据访问层中，对于业务逻辑是不可见的。
These underlying data access calls are thus consolidated in the data access layer and hidden from the business logic.
这些底层数据调用整合到数据访问层中，对于业务逻辑是不可见的。
应用推荐