您的数据库类有两个较为方便的方法。
您可以在有框架时或无框架时使用数据库类。
You can use the database classes with the framework or without it.
未来的更新将引入额外的数据库类等实用功能。
Future updates will introduce additional database categories and other useful features.
接下来，编写一个常规的数据库类，然后再把它修改成动态的。
Next, write a conventional database class that you will then modify to become dynamic.
通过数据库类，可以使用记录集对象来选择和访问结果集。
With the database classes, you use a recordset object to select and access the result set.
本文提出一个替代方法：使用单个数据库类包转多个数据库表。
This article presents an alternative method in which you use a single database class to wrap multiple database tables.
数据库类不直接支持DDL，但您仍然可以在运行时写代码以将新列动态绑定到记录集。
The database classes do not support DDL directly, but you can still write code to bind a new column to your recordset dynamically, at run time.
本演示中包含的Derby数据库类是 10.2alpha版，不应将其用于生产环境。
The Derby database classes contained in this demo are an alpha version of 10.2 and should not be used in a production environment.
有关在框架中使用数据库类的更多信息，请参见mfc：结合文档和视图使用数据库类。
For more information about using database classes in the framework, see MFC: using database classes with Documents and Views.
在这种情况下，还需要使用derby . jar文件，该文件是derby分发的一部分并且包含所需的derby数据库类。
In this case, you also need the derby.jar file, which is part of the Derby distribution and which contains the Derby database classes you need.
例如，复杂的ODBC调用序列、返回记录到存储位置的绑定、错误情况的处理以及数据库类为您管理的其他操作。
For example, the complex ODBC call sequences, binding of returned records to storage locations, handling of error conditions, and other operations are managed for you by the database classes.
该查看器显示了为数据库池示例加载的所有类。
The viewer displays all the classes loaded for the database pool sample.
清单2显示了这个数据库封装类的代码。
这个实体类如何与数据库联系起来？
健康指示器可以测定某些特定数据库对象类的状态。
A health indicator measures the health of some particular class of database objects.
例如，不要在数据库模式或类名称中使用客户名称。
For example, don't use the customer name in database schema or class names.
我们还增加了一个类映射数据库。
数据库将会在类图中被表示为一个UM l组件(如图2所示)。
The Database will be notated as a UML component in the class diagram (shown in Figure 2).
例如，提供了表示数据库、视图和文档的类。
For instance, there are classes to represent databases, views, and documents.
估计您每天能编写一个数据库访问类并完成其单元测试，因此，150 个表要用 150天的时间。
You estimate a day to write each database access class and unit test it, so 150 tables at one table per day is 150 days.
虽然看起来似乎很小，但是这里有可能建立数百个PHP数据库访问类。
As small as it seems, this is all there is to building potentially hundreds of database access classes for PHP.
如果查看清单2，您可以轻松地看到底层数据库模式与dao类之间的紧密耦合。
If you look at Listing 2, you can easily see the tight coupling between the underlying database schema and the DAO classes.
它允许您定义与数据库表对应的类。
It lets you define classes that correspond to the tables of a database.
使需求固定不变不会妨碍您—数据库模式会照看类，您无需担心。
Having requirements set in stone doesn't hinder you — the database schema sits with the class, and you don't need to worry.
本篇教程会向您展示如何使用DataStudio更加快速有效的自动创建可靠的数据库连接类。
This tutorial shows you how to use data Studio to develop applications more efficiently by automatically creating reliable database connection classes.
这个脚本包含Pear：DB数据库访问类。
provider包定义一些允许应用程序读取大量内置Android数据库的类和接口。
The package android.provider defines classes and interfaces that allow applications to read many built-in Android databases.
cargo还可能是数据库连接、复杂的类实例或带有几个项的列表。
Cargo might also be a database connection, a complex class instance, or a list with several items in it.
Ajax请求受到一个PHP驱动程序页的保护，该页先确保请求有效，然后将其传递到一个处理该请求的数据库包装类。
The Ajax requests are fielded by a PHP driver page, which makes sure that the request is valid and then passes it onto a database wrapper class that handles the request.
Topic是一个表示Discussion数据库中主题的类。
Topic is a class that represents a topic in the Discussion database.
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