Object migration in federated database systems
Elke Radeke, Marc H. Scholl · KOPS (University of Konstanz) · 1994
Existing federated database systems (FDBS) provide uniform access to multiple heterogeneous DBS, but do not enable objects to move across the DBS while retaining global identity. To fulfill this requirement of industrial users, we incorporate into FDBS a flexible object migration mechanism to move or duplicate objects from one component database system to another. We present different capabilities for "what" and "how" to migrate and consider the migration of both single objects and whole object graphs, i.e. an object together with related objects. 1 Introduction In many enterprises, multiple different database systems have been built or acquired over the last several years. When data communication became easier, the request for coupling databases increased to allow controlled sharing of data. The approach of federated database systems (FDBS) [8, 16] became very important in this field because it retains the autonomy of the multiple existing database systems. The gigabytes of data ins...