Maintaining Constraints Expressed as Formulas in Collaborative Systems

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Title Maintaining Constraints Expressed as Formulas in Collaborative Systems
Author Lin, Kai; Chen, David; Dromey, Geoff; Sun, Chengzheng
Publication Title CollaborateCom2007 : The 3rd International Conference on Collaborative Computing: Networking, Applications and Worksharing
Editor Dimitrios Georgakopoulos, Bugra Gedik
Year Published 2007
Publisher IEEE
Abstract Constraints allow users to declare relationships among objects and let the constraint systems maintain and satisfy these relationships. Formulas have been adopted to express constraints in a wide variety of single-user applications, because of their simplicity, efficiency and manageability. The needs and benefits of supporting formula-defined constraints in collaborative environments have long been recognized. However, maintaining both constraints and consistency in the presence of concurrency in collaborative systems is a challenge. In these systems, users may concurrently define formulas, which could result in that different formulas are defined to express the same objectattribute at different sites. In this article, we discuss the issues and techniques in maintaining formula-defined constraints in collaborative systems. In particular, we also proposed a method that is able to maintain both constraints and system consistency in concurrent environments based on the existing consistency maintenance approaches. This method extends the application of these approaches from collaborative systems without constraint to systems that support formulas. The proposed method has been applied to implement a collaborative Visio system, called CoVisio, which leverages single-user Microsoft Visio for multi-user collaboration. Specific issues related to CoVisio are also discussed in detail.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
ISBN 1-4244-1317-6
Conference name CollaborateCom 2007 : The 3rd International Conference on Collaborative Computing: Networking, Appli
Location New York
Date From 2007-11-12
Date To 2007-11-15
Date Accessioned 2008-02-19
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Science & Technology
Publication Type Conference Publications (Full Written Paper - Refereed)
Publication Type Code e1

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