Sun Microsystems Inc also poked its head round the data warehouse door yesterday, announcing what it calls the industry’s most scalable data warehouse. Called Decision Warehouse, it brings together several network computing technologies from Sun and its partners to enable customers to develop and implement data warehouses and is claimed to make it practical for companies to begin building a data warehouse that can start small and grow with their business requirements. Sun will also set up three dedicated Data Warehousing Competency Centres – two in the US, one in Europe, to give customers the opportunity to exploit Sun’s expertise in data warehousing to plan or test their own warehouses and to perform benchmarking analyses; they are due to open in the autumn.