GLAP : A Global Loopback Anomaly Prevention Mechanism for Multi-Level Distributed Transactions

Glap: a Global Loopback Anomaly Prevention Mechanism for Multi-level Distributed Transactions

The multi-level/hierarchical distributed transaction execution model is currently the model specified in the database standards and practiced in the implementations of commercial database management systems. In this model, a transaction may execute more than one subtransaction with different origins at a participating site, causing the same transaction to appear more than once at the participat...

Optimization of majority protocol for controlling transactions concurrency in distributed databases by multi-agent systems

In this paper, we propose a new concurrency control algorithm based on multi-agent systems which is an extension of majority protocol. Then, we suggest a clustering approach to get better results in reliability, decreasing message passing and algorithm’s runtime. Here, we consider n different transactions working on non-conflict data items. Considering execution efficiency of some different...

Exploiting Multi-Level Transactions in Distributed Database Systems

Multi-level transactions occur naturally in distributed database systems. They exploit the fact that many low-level conflicts become irrelevant if higherlevel operation semantics are taken into account. Thus, multi-level transactions may lead to an increase in concurrency. Hence, the transaction through-

Multi - Node Multi - Level Transactions 1

Multi-Level Transactions (MLT) o er a useful framework for increasing transaction concurrency in database systems. In this paper, we develop various approaches to implementing MLT in a shared disk multi-node system. By combining correctness and implementation speci cations, we present concrete insights into the resulting tradeo s between the degree of concurrency, the complexity of recovery, an...

A truthful Screening Mechanism for Improving Information Asymmetry in Initial Public Offering Transactions