Taking a practical developing procedure of information management system of graduate school for example,this paper introduces and analyzes the method of accessing data among databases by combining file operations without using DSN connection.

• 通过一个研究生学院信息管理系统实例的设计开发过程,分析探讨了JSP页面上不使用DSN,结合文件操作的方式,实现多种数据库系统互访的方法。