A hierarchical approach to concurrency control for multidatabases

Hierarchical concurrency control has been proposed as one possible approach for multidatabase systems. However, to apply this approach, some restrictions must be imposed on the local concurrency control algorithms. The restriction is identified. Based on this restriction, the hierarchical concurrency control approach is formalized and its correctness is proven. A novel global concurrency control algorithm based on this hierarchical approach is also presented.<
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