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Summary

We have described the changes necessary to the state diagrams for pessimistic and optimistic replication models in order to support adaptation-aware editing and progressive update propagation. In general, the changes involve adding states and transitions. The existing states and transitions remain with their original semantics. Some complications arise if we allow modifications to partial-fidelity versions, requiring components to be split to reflect old partial-fidelity data and new full-fidelity data. Additionally, data-type specific instrumentation may be required to extract the modifications and reflect them on the full-fidelity version.



Eyal de Lara 2003-03-04