Open-source database vendor grabs $15 million in VC financing, names former Sun senior VP of sales as new CEO Open-source database vendor Greenplum had cause for celebration Tuesday, announcing both $15 million in venture capital financing and the appointment of a new CEO.The startup named Sun veteran Bill Cook as its new head. He spent 19 years at Sun and held a variety of positions there, including, most recently, a three-year stint as senior vice president of sales. After leaving Sun, Cook took on a similar role in heading up sales and services at Linux hardware and clustering company Penguin Computing.In August 2006, Greenplum announced a partnership with Sun to develop dedicated data warehousing appliances using the startup’s database and the Sun Fire X4500 hardware server running Sun’s Solaris operating system. Tuesday, the two companies unveiled their first customer for the Sun Data Warehouse Appliance, Smart Communications, the leading wireless service provider in the Philippines. Greenplum has developed its commercial open-source databases based on the open-source PostgreSQL database and has aimed at users of data warehousing software and Bizgres to support BI applications.Sierra Ventures led the $15 million financing round in Greenplum. Three previous investors in the startup, venture capital companies Mission Ventures, Dawntreader Ventures, and EDF Ventures, also contributed. Greenplum will additionally benefit from the $4 million line of credit that Comerica Bank is making available to the company, the vendor said.Greenplum, which is based in San Mateo, California, plans to use the funds to continue development of its database as well as to expand its sales and marketing efforts around the world. That expansion is already underway with Greenplum on Tuesday also announcing the establishment of its Asia-Pacific regional headquarters in Singapore under the leadership of former Netezza executive Vinay Samuel. Netezza is a player in the data warehousing appliance market. Software DevelopmentOpen Source