Reducing code duplication in the data access tier.
减少数据访问层中的代码重复。
The data access tier is designed as a set of coarse-grained DAOs.
数据访问层被设计为一系列粗粒度的DAO。
The data Access Object got several finder methods to query the database.
数据访问对象(Data Access Object)有一些搜索方法以查询数据库。
All of the data access designers now fully support the upcoming SQL Server 2008.
所有的数据访问设计器完全支持即将推出的SQL Server 2008。
Personally I like the idea of keeping all the data access logic encapsulated in that class.
我个人倾向于将所有的数据访问逻辑封装到这个类中。
When a domain object leaves the data access tier, it gets detached from the entity manager.
当域对象离开数据访问层时，它与实体管理器脱离。
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。
In particular, great care must be given to the data access needs of future, unintended users.
尤其是，必须特别关注用户未来的数据访问需求。
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。
We will get to the annotations on this class shortly, but let me first explain the data access.
随后我们将注释这个类，但首先我们讲解一下数据访问。
The Business Logic Layer, in turn, requests that the data Access Layer deal with data persistence.
而业务逻辑层则请求数据访问层处理数据持久性。
You can refactor the code to isolate the data access functions into a separate file as homework.
作为练习，您可以对代码进行重构以将数据访问函数分离到单独的文件中。
Now that you've got the data access set up, take a look at creating a service for the application.
设置好数据后，就可以为应用程序创建服务了。
A T2 driver has a native component that is part of the driver, but separate from the data access API.
T2驱动程序中有一个本机组件，该组件是驱动程序的一部分，但与数据访问API相分离。
The hit ratio is a function of the cache size, the amount of underlying data, and the data access pattern.
命中率与缓存大小、底层数据的数量和数据访问模式有关。
The next version should focus less on the data access and business logic tiers and more on the service interface.
下一版本应该把重点放在服务接口，而不是数据访问和业务逻辑层。
The lowest layer in the architecture is the mediator layer which performs the data access with the repository.
体系结构中的最低层是中介器层，它执行对库中数据的访问。
If the highest performance is needed, the data access service can often be implemented as a database stored procedure.
如果需要最高的性能，通常可以将数据访问服务作为数据库存储过程实现。
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。
NOTE: Ideally, you could separate the data access logic into its own deployment unit and keep the controller pure.
注意：理想情况下，可以将数据访问逻辑分隔到它自己的部署单元中并且保持控制器没有被混杂。
The generic DAO pattern (also called Typesafe DAO) is critical to reducing code duplication in the data access tier.
泛型dao模式(也称为类型安全的DAO)对于减少数据访问层中的代码重复非常重要。
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。
This typically means that the authorization rules have to be embedded into the data access logic of the application itself.
这通常意味着必须将授权规则嵌入到应用程序本身的数据访问逻辑之中。
Enterprise data services effectively create abstraction layer, shielding business functionality from the data access details.
企业数据服务有效地创建了一个抽象层，使业务功能避开数据存取细节。
The Business Layer does not have any direct communication with the database - this is all handled by the Data Access Layer.
业务层和数据库没有任何通讯-这些有数据访问层处理。
The service implementation class USES the data access layer directly (ServiceRegistryRepository class) for execution of service.
Service的实现类直接使用数据访问层(serviceregistryrepository类)来执行服务。
This feature identifies which side is the master entity (driver) and which entity is the child and enhances the data access plan.
该特性定义了哪一边是主实体(驱动器)，哪个实体是子实体，并增强了数据访问计划。
The idea behind this model is to separate the interaction with the user, the processing, and the data access as much as possible.
该模型背后的思想是：尽可能地将与用户的交互、处理以及数据访问分离开。
You'll need a live database properly seeded with lookup data to test the GUI and a properly working GUI to test the data access logic.
您将需要一个具有正确查找数据的活动数据库来测试GUI，和一个运行正常的GUI来测试数据访问逻辑。
You'll need a live database properly seeded with lookup data to test the GUI and a properly working GUI to test the data access logic.
您将需要一个具有正确查找数据的活动数据库来测试GUI，和一个运行正常的GUI来测试数据访问逻辑。
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