On the basis of analysis on several solutions,this paper introduces JDO and discusses its characteristics and architecture.Then it makes an example on how to develop JDO.

• 在对比几种解决方案的基础上,介绍了实现数据持久层的一种新技术JDO,对它的特点、体系结构进行了讨论,并通过一个实例说明了JDO的开发过程。