Object Fusion in Mediator Systems (Extended Version)

Mediators are used for integration of heterogeneous information sources. In this paper we present a system for declaratively specifying mediators. It is targeted for integration of sources with unstructured or semi-structured data, or sources with changing schemas. In the paper we illustrate the main features of the Mediator Speciication Language (MSL), show how they facilitate integration, and discuss the implementation of the system that interprets the MSL speciications.