A Transaction Model For Handling Composite Events

We introduce our approach of multi-parent subtransactions based upon the nested transaction model as defined by

G. Kappel


Scholarcy highlights

  • Research on active databases has been driven by a need for supportingactive database functionality important for a number of non-traditional applications such as computer integrated manufacturing and workflow management
  • After having described the multi-parent subtransaction model in detail, we will show how this approach is applied to support the specification of subtransaction modes for several components of a composite event which are signaled in different transactions
  • This paper has shown that in the presence of composite events there is a need to apply transaction modes to the triggering transaction and to some or all of the event signaling transactions
  • The main purpose of this paper is to show the implications of this approach on the nested transaction model, which has been suggested as appropriate transaction model for AOODBSs
  • The original nested transaction model cannot cope with situations where a subtransaction mode is used for more than one component event
  • This criterion shows whether the nested transaction model is used by the various systems in order to execute a rule within a subtransaction of the event signaling transaction(s)
  • The proposed extensions allow to combine the reliability and flexibility of the nested transaction model with the expressive power of composite events

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