Exploiting Multidatabase Technology for CIM
||Exploiting Multidatabase Technology for CIM
||M. C. Norrie, W. Schaad, H.-J. Schek, M. Wunderli
||Department of Computer Science, ETH Zurich
We describe an approach to the realisation of CIM systems through the
coordination 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
specifies globally important local objects in terms of a global
semantic model. System-wide consistency is ensured through the
management 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.
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