Floor control for multimedia conferencing and collaboration
Multimedia Systems
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An approach to support activities in collaborative databases is proposed. This approach merges flexible transaction models from collaborative environments and semantics based correctness criteria. A model is first presented which incorporates the notion of collaboration in the context of transactions. A protocol is then developed based on this model for effcient management of collaborative activities. This is the first attempt to formally incorporate the notion of collaboration in the database management system. Most earlier approaches provide tools and mechanisms to circumvent the isolation requirement of transactions. The protocol is a generalization of strict two-phase locking since in the absence of collab oration, it reduces to strict two-phase locking.