Journal of Theoretical and Applied Information Technology
Database integration is a multistep process of finding similar entities in two or more databases to create a non-redundant, unified view of all databases. Database integration has become an active area for research due to increasing of information resources with the need of users and applications to integrate data from these different sources. This paper discusses the role of data integration and the fields that require it, problem of integration and the processes of integration. Finally it presents the current methods used in database integration in a form of graph that classified the approaches in clear manner.