Roger Jennings is a principal of OakLeaf Systems—an Oakland, California consulting firm that specializes in the design and implementation of client/server database systems for Fortune 500 companies. He brings over 25 years of computer programming experience to his best-selling Sams titles, including Database Developer¿s Guide with Visual Basic 3, Database Developer¿s Guide with Visual Basic 4, Access 1.1 Developer¿s Guide, Access 2 Developer¿s Guide, and the Roger Jennings¿ Database Workshop books, for which he is the series editor. In addition to writing books, Roger is a Contributing Editor and the writer of “Database Design” columns and feature articles on Visual Basic, Access, and client/server computing for Fawcette Technical Publications¿ Visual Basic Programmer¿s Journal.