In this paper we describe our experience applying the concepts of reeection to a legacy transaction processing (TP) monitor in order to support the implementation of extended transaction models. In the past ten years, numerous extended transaction models have been proposed to address the challenges posed by new advanced applications. Few practical implementations of these extended transaction m...

Performance of transaction processing systems is mostly determined by the amount of required physical disk I/O, which is due to database table accesses or log record writes. This paper describes a high-performance transaction processing system called Charm, which aims to reduce the performance impacts of disk I/O to the minimum. In current transaction processing architectures, a transaction blo...

Ever-increasing demands for high transaction rates, limitations of high-end processors, high availability, and modular growth considerations are all driving forces toward distributed architectures for transaction processing. However, a prerequisite to taking advantage of the capacity of a distributed transaction processing system is an effective strategy for workload allocation. The distributio...

The performance of a transaction processing system whose database is not completely memory-resident critically depends on the amount of physical disk I/O required. This paper describes a high-performance transaction processing system called Charm, which aims to reducing the concurrency control overhead by minimizing the performance impacts of disk I/O on lock contention delay. In existing trans...

Transaction costs” are commonly referred to in the recent literature on aid effectiveness. The shift to a new partnership aid paradigm (cf. the Paris Agenda) is grounded on the desire to render aid more effective, notably through reducing the high transaction costs generated by the project approach. Aid transaction costs, however, have neither been consistently defined nor measured. In this pap...

Since 1990, transaction processing in multilevel secure database management systems (DBMSs) has been receiving a great deal of attention from the database research community. Transaction processing in these systems requires modiication of conventional scheduling algorithms and commit protocols. These modiications are necessary because preserving the usual transaction properties when transaction...

In this paper we describe our experience applying the concepts of re ection to a legacy transaction processing (TP) monitor in order to support the implementation of extended transaction models. In the past ten years, numerous extended transaction models have been proposed to address challenges posed by new advanced applications. Few practical implementations of these extended transaction model...