A comprehensive, up-to-date treatment of database technology. This edition features: updated coverage of object-oriented database systems, including a proposal for rapprochement between OO and relational technologies; expanded treatment of distributed databases, including client/server architectures, with an emphasis on database design issues; a comprehensive introduction to all aspects of the relational model - the basis of modern database technology; and new chapters on functional dependencies, views, domains and missing information. This text is intended for undergraduates on courses in database technology.