Cloud computing and big data have become increasingly popular and are changing our way of thinking about the world by providing new insights and creating new forms of value.The research of cloud data management is to address the challenges in managing large collections of data in the cloud computing environment,and identifying information of value to business,science,govment,and society.The huge volumes of data in cloud computing environments pose major infrastructure challenges,including data storage at Petabyte scale,massively parallel query execution,facilities for analytical processing,online query processing,resource optimization,data privacy and security.