The gap between researchers and practitioners is widely discussed in the IT community. The purpose of this paper is towards showing the issues which occupy both research and practice, and the extent to which these issues have any overlap, in the field of data warehousing. To achieve this goal we first present the current status and tendencies in data warehouse research. Then we list several practical problems as they appear in the relevant literature, based also on our personal experience. Finally, we try to give the relationship of research and practice into a unified big picture.