A framework for handling errors during the execution of trigger rules for an active object-oriented DBMS

Abstract

As itigger systems i n aciivc object-orienicd daiabaac managcmcri rysicms (OODBMS) become ancnasingly wmplicaied, handling the e m r s , such as failuns and aborts, that may occur during the ezccution of trigger rules becomes an imporiani issue. This paper pnsenis a fimework for handling ihis iype of e m r s . I t ettends the ezisiing e m f handling mechanisms by modeling failuns, aboris and other e m r situaiions as events in ihc Eveni-Condiiion-Action (ECA) pamdigm. Thw, ihe contingency plans or handling e m r evcnis can be modeled as trigger ru f cs. Reuse of the DBMS funciionaliiies; uniform inaimeni of data objecis, trigger rules and contingency plans; and ihe jlctibiliir for users i o declamiivel define a coniingency plan i o suii a particular apptcation are among ihc main benefiia of ihis c m r handling framework. the trigger type definitions and add special attributes 0-8186-5360494 $3.00 0 1994 IEEE 132