This paper identiies the problems of the group commit protocol for the distributed main memory database systems, and presents a distributed group commit protocol. In the proposed protocol, a consistent set of transactions which have to be committed together is identiied during the normal transaction processing, by propagating the transaction precedence relations as the normal transaction messag...

The rapid development of networking technologies has made it possible to construct a distributed database that involves a huge number of sites. Query processing in such a large-scaled system poses serious challenges beyond the scope of traditional distributed algorithms. In this paper, we propose a new algorithm BRANCA for performing top-k retrieval in these environments. Integrating two orthog...

Various concurrency control algorithms have been proposed for use in distributed database systems. But, the number of algorithms available for the distributed concurrency control, come into one of three basic classes: locking algorithms, Timestamp algorithms and optimistic (or certification) algorithms. In this paper we are presenting a Distributed Transaction Processing Model and an approach f...