Each of these is essentially a wrapper around the data-access code we developed earlier.
这三个方法实质上都是先前开发的数据访问代码的包装器。
Let's look at a simple application that leverages the data-access code shown in Listing 2.
让我们查看一个利用清单2中所示的数据访问代码的简单应用程序。
The data consolidation pattern decouples the data-integration task from the data-access task.
数据整合模式将数据集成任务从数据访问任务中分离出来。
Spring's data access facilities automatically translate data-access exceptions into this exception class hierarchy.
Spring的数据访问功能自动将数据访问异常转换为此异常类层次结构。
Data access objects may or may not match the domain objects.
数据访问对象既可以匹配也可以不匹配域对象。
This pattern encourages you to treat an application in layers -- presentation, domain, data access.
此模式鼓励您分层（表示层、域层、数据访问层）处理应用程序。
The core concept is to centralize all security decisions in the gateway and prevent unwanted data access.
核心思路是把所有安全决策集中在网关，防止不希望出现的数据访问。
The technique of using stored procedures for data access can be used on all DB2 family servers.
使用存储过程来访问数据的这种技术可以在DB 2家族的所有服务器上使用。
The issue here is that existing applications effectively control enterprise data access through implementation of the data access and validation logic.
这儿的问题是现有应用通过实现数据存取和验证逻辑有效控制了企业数据的访问。
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。
The implementation contains methods encapsulating all required SQL statements for data access and manipulation.
该实现包含封装所有用于数据访问和操纵的sql语句的方法。
For more information about how to view and interpret DB2 data access plans, see Resources.
关于如何查看和解释DB 2数据访问计划的更多信息，请参见参考资料。
Logic and metadata used to define data access and aggregation can be reused across different projects.
用于定义数据访问和聚集的逻辑和元数据可以在不同的项目之间重用。
User identity must be propagated into services and used to authorize data access.
用户标识必须传播到服务中，并用于授权数据访问。
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。
Logic on defining data access and aggregation can be reusable across different projects.
有关定义数据访问和聚合的逻辑可以在不同的项目中加以重用。
In this article, you'll learn about layered testing with simulated data access objects (SDAOs).
在本文中，您将了解使用模拟数据访问对象(SDAO)进行分层测试。
A stored procedure is a popular feature that is widely used for improving data access performance.
存储过程是一种很受欢迎的功能，它广泛用于提高数据访问性能。
In the sections that follow you'll learn techniques for designing and implementing data access objects.
在下面一节中您将学习设计和实现数据访问对象的技术。
Is there something to be learned about data access and portability from these services?
那么从这些服务中，我们能学习到关于数据访问和可移植性的哪些经验呢？
Yet, the models and methods for doing data access are continually changing.
然而，实现数据访问的模型和方法一直在变。
BIRT provides core reporting features such as a graphical report designer, data access, and scripting support.
BIRT将提供图形报告设计器、数据访问和脚本支持等核心报表功能。
Better partitioning of implementation by factoring out extremely stable data access code from services implementations.
通过将非常稳定的数据存取代码从服务实现中分解出来，获得更佳的实现划分。
As with any application, carefully considering your business needs for data access goes a long way.
与任何应用程序一样，仔细考虑您对数据访问的具体业务需求任重而道远。
In addition to data access, a data platform typically provides a centralized place for data transformation.
除了数据访问，一个数据平台通常还提供一个集中式的数据转换场所。
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。
The data access logic is interwoven with application logic, which makes it hard to reuse the data access logic, as well as to keep track of it, and to modify it.
数据访问逻辑与应用程序逻辑相互交织，从而很难重用数据访问逻辑和跟踪该逻辑，以及修改该逻辑。
Data access, on the other side, can require both high and fine granularity of interfaces, depending on the data access requirements.
另一方面，依照数据存取的需求，需要高和细颗粒度的接口。
Minimize performance tuning of data access tasks.
将数据访问任务的性能调优降到最低。
Minimize performance tuning of data access tasks.
将数据访问任务的性能调优降到最低。
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