Optional instant locking in distributed collaborative graphics editing systems
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Real-time collaborative editing systems are distributed groupware systems that allow multiple users to edit the same document at the same time from multiple sites. A specific type of collaborative editing system is the object-based collaborative graphics editing system. fiaditionally, locking has been used as the major concurrency control techniques in this type of system. This paper examines locking in a supporting role to the concurrency control technique of multi-versioning. Two types of locks are examined: object and region. Two optional and responsive locking schemes, instant locking and instant exclusive locking, are presented. Their advantages and disadvantages are discussed.
Proceedings of the 2001 IEEE International Conference on Parallel and Distributed Systems
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