此数据连接通常存储在数据访问组件中。
This data connection is typically stored in the data access component.
与ado的早期版本和其他数据访问组件相比，ADO.NET提供了若干好处。
ADO. NET offers several advantages over previous versions of ADO and over other data access components.
把其中的数据访问组件设计成自定义标签库，方便了访问数据库的代码编写和维护。
Designing the database-access component in user-defined Tag Library to make it is easy to code and maintain program which need to access and operation database.
getDistributionByArea(…)用于通过图表数据访问组件ChartDataAccessor，检索所选品牌的分布数据。
GetDistributionByArea (...) for retrieving the distribution data for the selected brand through the chart data access component ChartDataAccessor.
在一个最终一致性的模型中，不是所有的系统组件都能立即访问到最精确的数据。
In an eventually consistent model, not all of the system components have immediate access to the most accurate data.
逻辑层将概念体系结构划分为在应用程序内扮演特定角色的组件，如表示层、应用程序逻辑层、业务流程层和数据访问层。
Logical tiers divide the conceptual architecture into components that play specific roles within the application, such as presentation, application logic, business processes, and data access.
例如，业务组件撤销对后端数据的访问。
For example, the business component might revoke access to the back end data.
虽然只显示一部分数据元素的属性，但是有些组件可以通过编程访问其他值。
Properties. Although only a subset of the data element's properties is displayed, there can be other components that need programmatic access to the other values.
如果不允许用户访问包含组件的数据库，那么可以允许他访问含有该组件的页面，但同时又不能访问数据库。
If a user is not permitted to access a database that contains a component, allowing the user to access a page with that component does not give him or her access to that database.
DataAccessObjects (DAO)允许您创建简单的组件，提供对数据的访问，而无需将实现的详细说明展示给应用程序的其余部分。
Data access Objects (DAOs) allow you to create simple components that provide access to your data without revealing the specifics of the implementation to the rest of your application.
它的设计原理是BizComponents这种本身用来访问和传输数据的可重用、可配置的处理组件。
Its design is based on BizComponents which are reusable, configurable processing components that can be used for the purposes of accessing and transforming data.
它们都是提供了DI容器的框架，也包含了其他组件，例如Web框架、数据访问框架等。
Both are fairly broad frameworks that provide a DI container, as well as many other components, such as a web framework, a data access framework, etc.
组件接口.jar文件包含您计划访问的数据的接口。
The.jar file contains the interfaces for the data that you plan to access.
不同版本的J2EE应用程序组件(例如访问相同外部数据库的实体bean)在修改相同的数据表或数据记录的时候会存在同步问题。
Multiple versions of J2EE application components, such as entity beans that access the same external database, could have synchronization issues while modifying the same table or row.
一般应用很可能包含许多其他组件(数据库访问，E - Mail协议，或者甚至于是像HL7或SAP这样非常专业的协议)。
A typical application would likely have many other components (database access, E-mail protocols, or even very specialized protocols like HL7 or SAP.)
因此，只一次获取数据，对数据进行缓存，并让所有其他组件使用该缓存的数据，而非再次访问后端系统，这是很有益的。
Therefore, it is useful to get the data only once, cache it, and have all other components use the cached data, instead of accessing the backend system again.
由于我们对两家银行使用了相同的组件实现，因此我们访问的是相同的基础数据库模式。
Since we are using the same component implementation for both banks we are accessing the same underlying data base schema.
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。
A T2 driver has a native component that is part of the driver, but separate from the data access API.
正如前面提到的那样，EJB组件控制着对后台数据的访问，并管理着当前事务和数据库的内部锁定。
As mentioned previously, the EJB components control the access to the back-end data and manage the current transactions and database locking internally.
它所引用的资源，雇员访问的数据源或顾客访问的数据源，要使用哪个数据源取决于是哪个组件在使用资源名。
Which resource it refers to -- the data source for employee access or the one for customer access -- depends on which component is using the resource name.
门户应用程序开发人员经常碰到的一个设计问题是：构建那些访问和集成来自各种不同数据源数据的软件组件的最好方法是什么？
It's a design issue that portal application developers often face: what's the best way to build software components that access and integrate data from a variety of disparate sources?
实体e JB组件的主要目的是远程访问持续数据，这些数据主要存储在关系数据库中。
The main purpose of entity EJB components is to remotely access persisted data, mostly stored in a relational database.
信息服务支持组件提供的功能还可以帮助将服务接口映射为访问整合数据库中的数据的查询。
Functionality of the information service enablement component can also help to map a service interface to a query that accesses the data in the consolidated database.
当一个EJB组件想访问数据库、消息队列服务器或者其它一些事务性资源时，它需要到资源管理器的连接(通常是使用JNDI)。
When an EJB component wants to access a database, a message queue server, or some other transactional resource, it acquires a connection to the resource manager (usually by using JNDI).
EJB组件控制着对后台数据的访问，并管理着当前事务以及数据库的内部锁定。
The EJB components control the access to the back-end data and manage the current transactions and database locking internally.
IDSLBACREADSET：要访问数据，用户安全标签的每个集合组件必须包括数据安全标签的集合组件。
IDSLBACREADSET: Each set component of the user security label must include the set component of the data security label to allow access to data.
数据库经常由组件和对象访问，而组件和对象又由另一层代码调用，这一层通常就是所谓的中间层。
The database is often accessed by components or objects that execute on the server and are called by other layers of code, often referred to as the middle tier.
IDSLBACWRITESET：要访问数据，用户安全标签的每个集合组件必须包括数据安全标签的集合组件。
IDSLBACWRITESET: Each set component of the user security label must include the set component of the data security label to allow access to data.
典型情况下，物理元数据并不会影响SDO客户机，但是它会影响到DMS, DMS是负责访问数据源的组件。
The physical metadata typically does not affect SDO clients; however, it does affect DMS, which are responsible for data source accesses.
但是，很多时候存在一组采用相同方式访问数据源的EJB组件，反复地定义相同的资源引用就成了一件非常费力的工作。
However, many times I will have a group of EJB components that access the data source the same way, and it becomes a big pain to define the same resource reference over and over again.
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