Research Of Data Integration For Teaching Resources Based On Ontology

With the fast development of the computer and network technology, the information of net increases rapidly, and has become an enormous information storehouse. Teaching resources have taken sizable specific gravity in this information storehouse, and at the same time a lot of teaching resource units develop a large number of different application systems of software and hardware platform except all kinds of schools at all levels have established their own teaching application system. Abundant teaching resources are accumulated under various application systems, which is favored by teacher, student and persons who teach themselves. The data source is varied, which there are traditional databases, file system, and html, xml etc, and different data model of teaching resource make all mutual operation of data source complicated, and made user unsatisfied. So it is a urgent problem to be solved to realize expediently geography distribution, mode different teaching resource mutual and integrated.At first this paper introduces the ontology notion to the integrated field of teaching resource, afterward analyze detailedly ontology technology include present prevailing ontology construct method, ontology mapping method and logic denotation, language description of ontology, and study several problems that exists in the course of ontology construct, and emphases on research ontology denotation problem of description logic and OWL language. Followed we integrate ontology and teaching resource together that finish semantics description of data integration from structure, and present teaching resource integrate realization model based on ontology, and discus the key design thought of this mode, and progress in overall design according to the thought of setting up sharing vocabulary storehouse (overall ontology) first, and then set up part ontology, and rise to ontology semantics high for mapping integration, and propose three layer realization mode of data source layer, operation middle layer and application realization mode. At last we introduce the key technology of the prototype system realization on this basis, and explain a cut-and-try way of isomerous source information integration mutualness among isomerous resource in the field of teaching.