他介绍了如何使用JDBC驱动、连接、语句、结果集对象的类包装来工具化jdbc，并由此工具化数据库调用。
He describes how to use class wrapping of the JDBC driver, connection, statement, and result set objects to instrument JDBC, and hence, database calls.
该结果集对象是一个复杂对象，它通常位于数据库管理系统的存储器中，并且只能通过与之交互的函数辨认。
A result set object is a complicated beast, as it usually resides within the memory of the database management system and can only be deciphered by functions that interact with it.
用于容易地处理数据库对象(例如表、视图、脚本、过程和结果集)的新的IBM设计器。
New IBM designers for easily working with database objects (such as tables, views, scripts, procedures, and result sets).
一个数据库相关的应用程序有许多这样的对象，如连接、语句、结果集等等。
An application that USES a relational database has many such objects, like connections, statements, result sets, and so on.
这样，数据库就只会查询一次，并且我们接下来也可以遍历存储在集合对象里面的结果集。
With this the database is only queried once and we will then iterate over the result set that is stored within the collection object. Here is the changed sample code.
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.
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.
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