Uniform approach to global concurrency control and recovery in multidatabase environment

In this paper, we provide a uniform approach to global concurrency control and recovery in multidatabase environment. Instead of considering global serializability and global atomicity as two orthogonal concepts, we simply adopt global serializability as the only correctness criterion and require global serializability to be maintained even in a failure-prone multidatabase environment. We first propose rigid conflict serializability (R-CSR) as a sufficient condition for the global transaction manager to ensure global serializability in an autoaomous. heterogeneous, and failure-free multidatabase environment. Following this, we show that the combination of cascadeless R-CSR of global transactions and a context-sensitive and late redo recovery leads to the achievement of global serializability in a failure-prone multidatabase environment.