描述了基于PDA的通过调用WebService方法对工件数据采集和查询的系统。该系统在实际MES工程中测试通过，通过扫描条形码获取相关信息提高工作效率。-This paper describes a PDA-based mobile system of workpiece data inquiring and acquisition that can process data by calling the Web Service. The system is practically tested

开发ERP系统程序员必备技能: Delphi数据库系统应用程序开发规范,成熟ERP系统各模块基本需求.项目文档管理计划-Development of ERP systems programmer skills required: specification of the Delphi database systems application development, the basic needs of the mature ERP system modules project docume