Exploiting multidatabase technology for CIM

We describe an approach to the realisation of CIM systems through the coordina tion of autonomous component systems based on the exploitation of multi database technologies Each component system is augmented by a CIM Agent which provides a coordination interface the interface speci es globally important local objects in terms of a global semantic model System wide consistency is ensured through the manage ment of global constraints by a central coordinator along with cooperative multi level transaction schemes The CIM Agents are responsible for monitoring local activities and notifying the central coordinator of updates relevant to global consistency they are also responsible for initiating local actions necessary for the maintenance of system wide consistency as delegated by the coordinator In particular we describe the CIM Z system which is being developed as part of a Swiss collaborative project on the use of database technologies for CIM