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A dynamic and integrated concurrency control for distributed databases

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2 Author(s)
Pons, J.-F. ; Centre de Recherche en Inf., Montpellier Univ., France ; Vilarem, J.-F.

An integrated approach to concurrency control adaptively allows classical pessimistic (two-phase locking) or optimistic (using certification) approaches. The principles for a distributed integrated method controlling both locking and optimistic transactions are defined. The implementation of these principles leads to a method for constructing the serialization order of transactions, using their conflicts. This dynamic construction prevents the systematic rejection of old (long) readers, as in the multiversion methods. On the other hand, applying Thomas' rule to control the write conflicts permits the presence of old (long) writers.<>

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Selected Areas in Communications, IEEE Journal on  (Volume:7 ,  Issue: 3 )