教据库系统概论 An Introduction to Database system 中国人民大学傖息学院计搶机系 Renmin University of china Department of Computer Science, Informational school Spring 2003 An Introduction to Database SystenmAn Introduction to Database Systenm Renmin University of China Department of Computer Science, Informational school Spring 2003 数据库系统概论 An Introduction to Database System 中国人民大学信息学院计算机系