MOMIS: Overview
The MOMIS (Mediator envirOnment for Multiple Information Sources) is a
framework to perform information extraction and integration from
both structured and semistructured data sources. An object-oriented
language, with an underlying Description Logic, called ODL-I3,
derived from the standard ODMG is introduced for information
extraction. Information integration is then performed in a
semi-automatic way, by exploiting the knowledge in a Common
Thesaurus (defined by the framework) and ODL-I3 descriptions of
source schemas with a combination of clustering techniques and
Description Logics. This integration process gives rise to a
virtual integrated view of the underlying sources (the Global
Schema) for which mapping rules and integrity constraints are
specified to handle heterogeneity. The MOMIS system, based on a
conventional wrapper/mediator architecture, provides methods and
open tools for data management in Internet-based information systems
by using a CORBA-2 interface. MOMIS was developed as a joint
collaboration between the University of Modena and Reggio Emilia and
University of Milano and Brescia, within the INTERDATA national
research project, under the direction of Professor S. Bergamaschi.