Abstract: In order to setup an efficient mapping relation between object and database, the paper proposed a method for data persistence,in which a data persistence layer between logical layer and database layer is created based on the key function of data persistence layer. Compared the typical methods for data persistence and analyzed their merits and demerits,got inspirited from the function of Hibernate,then realized a universal data persistence layer frame.

Key words: ORM, Lightweight, Data persistence, Hibernate