Freie Universität Berlin
In the last coupling years Prof. Lenz dedicated much of his research to Business Intelligence. Some of his work is briefly summarized in this paper. A definition and explanation of Business Intelligence is given in (?). In the following the main objects of research are presented. The architecture of Databases including statistical databases is presented in the next section. Work corresponding to data warehouse architecture and the fusion of data to obtain a \"Good\" data warehouse is presented in the following section. As a new trend mobile OLAP is also included in this research area.