David Maier is a professor of computer science at Portland State University. He is the author of books on relational databases, logic programming and object-oriented databases[1], as well as papers in database theory, object-oriented technology and scientific databases. He received the Presidential Young Investigator Award from the National Science Foundation in 1984 and was awarded the 1997 SIGMOD Edgar F. Codd Innovations Award for his contributions in objects and databases.