San Mateo, Calif. -- Greenplum, a San Mateo-based developer of an open-source database for business intelligence and data warehousing, said on Tuesday that it has raised $19 million in equity and debt financing, and named former Sun Microsystems executive Bill Cook as its CEO. The company said that $15 million came from a round of venture capital financing round led by Sierra Ventures. Previous investors Mission Ventures, Dawntreader Ventures and EDF Ventures also participated. Greenplum also received a $4 million line of credit from Comerica Bank. The company said that it will use the new capital to continue development of its database, as well as to expand its sales and marketing efforts globally. Cook spent 19 years at Sun, finishing as its senior vice president of U.S. sales. He most recently served as the senior vice president of sales and services at Penguin Computers.