An Approach for Ensuring Concurrency Control of Global Transactions in Heterogeneous Distributed Database Systems

In this paper, we have proposed the strategies for concurrency control of global transactions in heterogeneous distributed database systems. We have focused on the issues of consistency, local autonomy and performance. A technique to prevent and resolve inconsistency, classified into one of the two basic approaches: optimistic or pessimistic. The previous research intends to provide a high degree of concurrency among global transactions, while the later is concerned with aborts of global transactions. The strengths and weaknesses of the two approaches are discussed.