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...

Ethereum is one of the most popular platforms for development blockchain-powered applications. These applications are known as ÐApps. When engineering ÐApps, developers need to translate requests captured in front-end their application into or more smart contract transactions. Developers pay these transactions and, they (i.e., higher gas price), faster transaction likely be processed. Developin...

Locking is one of the predominant costs in transaction processing. While much work has focused on designing efficient locking mechanisms, not much has been done on understanding how transaction applications issue queries and leveraging application semantics to improve performance. This paper presents QURO, a query-aware compiler that automatically reorders queries in transaction code to improve...

171 Application of Unique View Consistency for Elimination of Covert Channels in Real-Time Secure Transaction Processing Systems Namgyu Kim and Songchun Moon Database Laboratory, Department of Management Engineering, Korea Advanced Institute of Science and Technology, Graduate School of Management, 207-43 Cheongryangri-dong, Dongdaemungu, Seoul 130-012 Korea Email: [email protected] Email: scmoon...

In the world of payments processing, managers are increasingly challenged to improve the profitability of today’s business while accommodating a steady stream of new transactions, channels and technologies. Many have found it difficult or even impossible to extend their transaction processing systems for new initiatives. As a result, organizations have lost money and competitive advantage as th...

Decades of research have sought to improve transaction processing performance and scalability in database management systems (DBMSs). Far less attention has been dedicated to the predictability of performance—how often individual transactions exhibit execution latency far from the mean. Performance predictability is vital when transaction processing lies on the critical path of an interactive w...

Previous research in the area of mobile transactions has mainly concentrated in developing schemes for processing conventional transactions, location management, and data broadcast. No one has examined how such mobility issues as location dependent data impact the actual deenition of a transaction in the mobile computing environment. There is a distinct lack of work related to data classiicatio...

This paper considers the use of transaction processing systems in manufacturing applications. It is part of the ConTract project at Stuttgart University, which explores techniques to extend transaction technology into areas of long-lived, interacting applications. We will focus on two aspects: First, we will describe a transaction-oriented invocation protocol between a control computer and a ph...

Several techniques for database replication using group communication have recently been proposed, namely, the Database State Machine, PostgresR, and the NODO protocol. Although all rely on a totally ordered multicast for consistency, they differ substantially on how multicast is used. This results in different performance trade-offs which are hard to compare as each protocol is presented using...

Testing the reliability of high performance tlansaetion processing systams poses many difficult challenges that are not adequately answered by conventional testing techniques. We discuss a new test paradigm, which is dynamic and exploratory in nature, and discuss its ability to meet these challenges. We describe an implementation of thii paradigm in products that aid in efficiently testing reli...