The main layers of the application are a database, a persistence framework, a database access object, and user interface (UI) controller and view layers.
应用程序的主要层是数据库、持久性框架、数据库访问对象和用户界面(UI)控制器及视图层。
If your database contains sensitive data, you might want to limit access to the catalog views, because the catalog describes every object in the database.
如果你的数据库包含敏感信息，您可能希望限制对编目视图的访问，因为编目描述了数据库中的每一个对象。
User mapping - a user mapping has to be defined for each user who wants to access the remote database using the previously defined server object.
用户映射-对于希望用前面定义的服务器对象访问远程数据库的每个用户，都必须创建一个用户映射。
Simple access is a little slower than a simple query (find a single object by primary key) to a database.
对数据库的简单访问要比对数据库的查询(通过主键找到一个单一对象)慢一些。
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。
Once you have created a Database object, you can use it to access data, as we'll see in the next section.
一旦您创建了Database对象，您就可以使用它来访问数据，如我们在下一章可以看到的一样。
The account name used to access the database, in this case Db2admin, is prepended to each business object.
在本例的Db2admin 中，用于访问数据库的帐户名称预先计划到每个业务对象。
You access database metadata in JDBC by calling the appropriate method from the DatabaseMetaData object, as shown in Listing 3.
通过调用DatabaseMetaData对象中的适当方法在JDBC中访问数据库元数据，见清单 3。
As illustrated in Figure 16, this object passes the necessary data to the BLL, which then requests the data Access Layer to save the data to MySQL database.
如图16所示，此对象将必要的数据传递给BLL，后者随后请求数据访问层将数据保存到MySQL数据库。
The Contacts Sample uses a multitier pattern for data access: presentation - service - data access object - database.
ContactsSample在数据访问中使用了多层模式：表示-服务 - 数据访问对象 -数据库。
'Lazy loading' tells NHibernate not to load an object from the database until the application needs to access its data.
'lazyloading '告知NHibernate不要从数据库表中加载这个类对象，直到程序中需要访问这个对象的数据时才加载。
When properly done, the database access is buried behind a business logic object so that Web site developers who use JSPs don't know how the underlying database is organized.
在正确完成处理之后，数据库访问被隐藏到了业务逻辑对象之后，因此，那些使用JSP的Web站点的开发人员并不知道如何组织数据库。
In Listing 1, the FESI database access extension provides the versatile database object.
在清单1中，FESI数据库访问扩展名提供了通用的Database对象。
However, if you've carefully isolated your database access code within a handful of object methods, your modifications will likely be slight and centralized.
不过，如果您已经小心地隔离了一些对象方法内的数据库访问代码，则修改将很可能十分轻微且集中。
You can still apply it when using data-access object (DAO) or JDBC-based frameworks and database stored procedures.
在使用数据访问对象(DAO)或基于JDBC的框架和数据库存储过程时，您可以使用它。
The first two articles of this series described in detail how to use inline methods and how to use data access object interfaces (DAOs) to access the database.
本系列前两篇文章详细介绍了如何使用内联方法和数据访问对象(DAO)来访问数据库。
Rails USES the ActiveRecord library to handle database access and object-relational mapping between database tables and Ruby object models.
Rails使用activerecord库处理数据库访问及数据库表与Ruby对象模型之间的对象关系映射。
The first one, which USES Container-Managed Persistence (CMP) to provide object-based access to a simple database table, is called PhoneBookEntryBean.
第一个类使用容器管理持久性(Container - Managed Persistence,CMP)来提供对简单数据库表phonebookentrybean的基于对象的访问。
Django comes with its own object-relational mapper (ORM) library that supports dynamic database access through a Python object interface.
Django提供了自己的对象关系型数据映射组件(object - relationalmapper,orm)库，它可以通过Python对象接口支持动态数据库访问。
With the database classes, you use a recordset object to select and access the result set.
通过数据库类，可以使用记录集对象来选择和访问结果集。
This paper describes the access control method for the specific relational-object data structure on the base of the self-developed spatial database, VISTA.
论文在自主开发的空间数据库VISTA的基础上针对特定的对象-关系型数据结构，提出了相应的访问控制方法。
To different user role, according to the data source that its use, award different database object to access attributive respectively.
对不同的用户角色，根据其使用的数据源，分别授予不同的数据库对象存取权限。
The database design of the system applications based on the relationship between the object-oriented database theory, Convenient access to information, at the same time improve the system scalability.
本系统的数据库设计应用了基于关系数据库的面向对象理论，方便了信息的获得，同时提高了系统的可扩展性。
The database design of the system applications based on the relationship between the object-oriented database theory, Convenient access to information, at the same time improve the system scalability.
本系统的数据库设计应用了基于关系数据库的面向对象理论，方便了信息的获得，同时提高了系统的可扩展性。
应用推荐