International Journal of Modern Engineering Research (IJMER)
In this paper the authors propose an ontology based data migration for large database. Their approach provides a reduction and integration of the ontology from the diverse databases. The ontology is classified into two major categories: global ontology and local ontology. During the data migration process all the local data, relationships among the local data is represented into ontology tree and this local ontology tree is mapped with the global ontology tree. This mapping process involves ontology disintegration, merging of sub-tree and validation of the ontology mapping process.