Cavique, LuísCavique, MarianaSantos, Jorge M. A.2020-11-182020-11-182020978-3-030-45687-0 (Print)978-3-030-45688-7 (Online)http://hdl.handle.net/10400.2/10186Star schema in data warehouses is a very well-established model. However, the increasing number of star schemas creating large constellations schemas add new challenges in the organizations. In this document, we intend to make a contribution in the technical architecture of data warehouses with constellation schemas using an extension of the bus matrix. The proposed supply-demand matrix details the raw data from the original databases, describes the constellation schemas with different dimensions and establishes the information demand requirements.engDenormalization formsData warehousesConstellation schemasProcess orientedconference object10.1007/978-3-030-45688-7_33