Ontology Integration in Complex Information Systems with Distributed Architecture

With growth of volume and complication of structure of storable data the problem of integration of information systems is aggravated. This article contains the short review of approach to semantic integration of the heterogeneous ontologies of complex information systems. The main idea consists in reviewing of ontologies from different data domains. It is offered to find similarity between elements (concepts) of ontologies and I distinguish the following three dimensions: lexical, attribute and relation. The program system of integration of ontologies is described. Its distinctive feature is release of the user from need to manually compare data models in case of the continuous adjustment of the distributed information systems.