Decision support system using data warehouse for hotel reservation system

As a big hotel which has many branches in Indonesia, a hotel should need the express report for business development in order to take decision. This paper proposes data warehouse for supporting business in XYZ hotel to get better information about customers data of each branches for taking decision. The data warehouse development consists nine step methodology designed by Kimball and Ross. Furthermore, the data is able to be presented in dashboard or report corresponding to the user to simplify the data presentation, The data warehouse is used to integrate the data sources needed to provide quick and accurate information.