Agent-oriented model for managing long-lived transaction, based on work-flow and task-graph

The management of long lived transactions is an interesting topic in the application of databases for long term enterprise requests. Some methods have been proposed to manage this type of transaction well: nested transaction model, SAGAS model, etc. However, the models are not always successful at controlling various classes of long lived transactions effectively. We describe our 3-layer model of long lived transaction which was developed to avoid such troublesome problems, and address the management strategy to be constructed under the 3-layer model, based on work flow and task graph