在众多的计算机应用中，有一类重要的计算机应用，称为数据密集型应用，例如，管理信息系统、办公信息系统、银行信息系统、民航定票系统、情报检索系统等，这是最大的计算机应用领域，管理这种大量的、持久的、共享的数据需要数据库技术。
JDBC是Sun提供的一套数据库编程接口，由Java语言编写的类、界面组成。用JDBC编写的程序能够自动地将SQL语句传送给相应的数据库管理系统，而且通过使用JDBC，开发人员可以很方便地将SQL语句传送给几乎任何一种数据库。也就是说，开发人员可以不必写一个程序访问Oracle，写另一个程序访问MySQL，再写一个程序访问SQL Server。
使用Java编写的应用程序可以在任何支持Java的平台上运行，Java和JDBC的结合可以让开发人员在开发数据库应用程序时真正实现“一次编写，处处运行！”。
In many of the computer application, have a kind of important computer application, called data intensive applications, for example, the management information system, office information system, bank information system, civil aviation booking system, such as information retrieval system, this is the biggest computer application field, manage this a lot of, lasting, sharing of data to database technology.
JDBC is a set of Sun provide database programming interface, written by the Java language classes, interface component. Use JDBC programming can automatically will send it to the corresponding SQL database management system, and by using JDBC, developers can very conveniently the SQL statement sent to almost any kind of database. That is, the developers can don t need to write a program to visit Oracle, write another program access MySQL, to write a program to visit SQL Server.
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