Part 1 Defining distribution: distribution - myth or reality?, Simon Holloway and Tim Warren; distribution - solution or problem?, Tim Bourne; complex distributed information systems and case technology, James McFarlane. Part 2 Data access issues: security in a distributed environment, Rodney Clarke. Part 3 Client-server architectures: the client-server architecture in a mixed database environment, Nigel Geary; the client-server architecture in large distributed business processing activities, Colin Dalder. Part 4 Dictionaries and distributions: the role of dictionaries in open distributed systems, William Olle; central repository control of a distributed development environment, Philipe Turner-Loisel. Part 5 Vendor development: developing products to support distributed data processing, Carlos Miguens.