Transaction support for an ANSA-based platform

This article considers the problems of ensuring reliability in distributed cooperative systems through the transaction methodology. From the analysis of several transaction models, it is argued that the diversity of requirements in the distributed environment demands a novel approach. The transaction model proposed aims at providing the required flexibility. In this model, applications have more control over transaction management through the specification of policies for services such as concurrency control and recovery. The approach also features a number of mechanisms specifically tailored for distributed cooperative systems including notifications and reservations. The model feasibility is demonstrated by layering the transaction facilities on top of a distributed platform based on ANSA