Database Research: Achievements and Challenges

Database system is the infrastructure of the moderninformation system. The R\&D in the database system and itstechnologies is one of the important research topics in the field. Thedatabase R\&D in China took off later but it moves along by giantsteps. This report presents the achievements Renmin University of China(RUC) has made in the past 25 years and at the same time addresses someof the research projects we, RUC, are currently working on. The NationalNatural Science Foundation of China supports and initiates most of ourresearch projects and these successfully conducted projects haveproduced fruitful results.