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The study on database technologies, or more generally, the technologies of dataand information management, is an important and active research field. Recently, many excitingresults have been reported. In this fast growing field, Chinese researchers play more and more activeroles. Research papers from Chinese scholars, both in China and abroad, appear in prestigious academic forums.In this paper, we, nine young Chinese researchers working in the United States, presentconcise surveys and report our recent progress on the selected fields that we are working on.Although the paper covers only a small number of topics and the selection of the topics is far frombalanced, we hope that such an effort would attract more and more researchers, especially thosein China, to enter the frontiers of database research and promote collaborations. For the obviousreason, the authors are listed alphabetically, while the sections are arranged in the order of theauthor list.