The Multi-version and Single-display Strategy in Undo Scheme

Authors:
Jiangming Yang;Qiwei Zhang;Ning Gu;Genxing Yang;Zhenyu Liu
Affiliations:
Fudan University;Fudan University;Fudan University;Shanghai key Laboratory, software testing and evaluating;Shanghai key Laboratory, software testing and evaluating
Venue:
CIT '05 Proceedings of the The Fifth International Conference on Computer and Information Technology
Year:
2005

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Consistency maintenance based on the mark & retrace technique in groupware systems

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Abstract

Consistency maintenance is one of the most significant challenges in groupware systems. In groupware systems, the effect of incorrect execution will be more extensive for it is done in distributed group editors, so the user will have more dependence on Undo. While intention violation puzzle has never been addressed in any published work, it will destroy the consistency and lead to a crash. We propose a Mark and Retracing based method to reach the goal of consistency maintenance and achieve Multi-version and Singledisplay strategy in undo scheme. It is different from operation transformation method and provides a new perspective into group editors.