Greenplum, a software firm developing database clustering software used for the data warehousing business, has been acquired by EMC. Financial terms of the deal were not disclosed. The acquisition is the end of a long road for Greenplum--originally based in Sherman Oaks--and its investors, which includes San Diego's Mission Ventures. The firm, which first appeared in Los Angeles in 2001 as Metapa, was backed by such firms as Dawntreader, EDF Ventures, Hudson Ventures, Meritech Capital Partners, Mission Ventures, SAP Ventures, Sierra Ventures, and Sun Microsystems. The firm appears to have gone through at least one recapitalization, and multiple executive team changes, and moved to Silicon Valley in the meantime. Leo Spiegal of Mission Ventures was on its board, and Scott Yara--who was an executive along with Spiegel at Digital Island/Sandpiper Networks--was President and Co-Founder of the firm.