logic and databasa operation logic.so the business layerⅢencapsulate its logic into special service and provide it to the custome惜. The author focuses on the application ofparsistence design patterns in the valueadded service web system.based on the project“SP value added service websitesystem of Ouangdong Planning&Designing Institute of TelecommunicationsCO.LTD’’,which author has involved in.The author analyzes four persistence designpatterns designed in the persistence skeleton:DAO,domain object factory,reSOurcepool al-d persistence transaction.DAO pattern and domain object factory pattomdccouple the business layer end persistence layer.ney encapsulate the databaseoperation logic and map the dam from the database into domain object so that timbusiness layer can Ilse the domain object directlyJ Resource pool and transaction mastbe considered in the persistence design.During the aegcgs to the database.it costsveD,much time when creating a ilCW database connection.Resource pool patternimproves the access efficiency when muhiplc懈c幅accc鹞the website system.Transaction maintains the consistency and integrity of the database when somebusiness logic needs to update more than Uric data table of the database.At last,theauthor focuses 011 the application in the projent of SP value added service websitesystem of Guangdong Planning&Designing Institute of Tclecommunicatiens n持久层设计模式在增值服务阿站系统的研究与应用 ABsTR^cTCO.IjrD On designing the persistence skcleton using persistence design patterns,the innerdesign follows the principle of high cohesion and low coupling.which is the basicobject oriented design principIc,in order to reusig the skeleton in future’s system.On and developing the website based the J2EEdesigning Oll architecture,robustpersis