The system for data exchange among databases oriented on CORBA standard and mobile agent technology

This article presents aspects of a designed and implemented working system for data distribution among intranet databases. The article presents analysis and description of the system, and of problems and conclusions which occurred during designing, implementing and testing the system. The main aim for creating the system was to assure cohesion between data stored in databases located in scientific centres. Communication among the databases is based on mobile agent technology integrated with the CORBA standard. The system was designed taking into consideration many different states, possible faults and conflict situations, which can occur during common work. I did not impose any restriction on database operators´ work (timing of modification, creation or deletion of records, switching off servers etc.) or on operation of the network. This system was designed as fully independent of all the above situations, so it is possible to integrate it with different existing databases systems