Biographical sketches of authors

Nathan Colossi IBM Software Group, Silicon Valley Laboratory, 555 Bailey Avenue, San Jose, California 95141 (electronic mail: colossin@us.ibm.com). Mr. Colossi is a staff software engineer in the DB2 OLAP Server Development department at IBM's Silicon Valley Laboratory. He has been helping in the efforts to integrate OLAP and relational technology in DB2, specifically in the OLAP meta-data area. Mr. Colossi joined IBM in 2000 after receiving his master's degree in multidimensional indexing structures from the University of Campinas, Brazil.

William Malloy IBM Software Group, Silicon Valley Laboratory, 555 Bailey Avenue, San Jose, California 95141 (electronic mail: malloy@us.ibm.com). Mr. Malloy is a Senior Technical Staff Member in the Business Intelligence and Database Technology organization at IBM's Silicon Valley Laboratory. He is the architect for IBM's DB2 OLAP Server, and a leader in efforts to integrate OLAP and relational technology in DB2. Mr. Malloy has 30 years experience in business, scientific, and operating systems development. His work in decision support software began in 1988 when he joined Metaphor Computer Systems as a development manager for database middleware. He joined IBM in 1994 when Metaphor's operations were merged with IBM.

Berthold Reinwald IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120 (electronic mail: reinwald@almaden.ibm.com). Dr. Reinwald joined the IBM Almaden Research Center in 1993, after finishing his Ph.D. degree in computer science from the University of Erlangen-Nuernberg. His Ph.D. thesis on workflow management received the “best Ph.D. thesis” award from the university and was published as a book. At IBM Research, Dr. Reinwald contributed to SMRC (shared memory-resident cache) in DB2 Common Server, query explain tools, workflow management with Lotus Notes^®, FlowMark^®, and MQSeries, researched and delivered in DB2 Universal Database^® support for OLE/COM, OLEDB, XML, and most recently Web services. Dr. Reinwald is active in the design, architecture, and implementation of SQL extensions for XML.