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The Computer Journal 1996 39(6):455-470; doi:10.1093/comjnl/39.6.455
© 1996 by British Computer Society
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Cooperative Information Sharing: Developing a Shared Object Service

J. A. Mariani * and T. Rodden *

Computing Department, Lancaster University, LA1 4YR, UK

This paper examines the importance of sharing within cooperative systems and argues for a specialized service to support the cooperative aspects of information sharing. An investigation into the current information models used by Computer Supported Cooperative Work (CSCW) applications is presented. This is complemented by highlighting the problems faced by traditional database mechanisms in supporting cooperative applications. From this we form a set of requirements for CSCW information systems, and this analysis is used directly in the creation of new software concepts and an associated framework. Rather than present a detailed design, we propose a set of novel and viable design concepts, and the beginnings of an architectural framework for providing shared object services for CSCW systems. The relationship between the cooperative shared object service and existing services is briefly examined. A number of services of particular importance to CSCW systems are identified. More detailed consideration is given for a selection of service elements. The paper presents both the need for these services and the means of realizing the shared object service by augmenting existing object facilities.

Received July 12, 1994. revised September 16, 1996.

* Computing Department, Lancaster University, LA1 4YR, UK Email: J.Mariani{at}lancaster.ac.uk|T.Rodden{at}lancaster.ac.uk


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