온토로지 기반의 웹서비스를 이용한 포털 시스템 구현

Abstract

As the Internet-based E-Business is generalized, an information system at the enterprise is seriously expected the unification of heterogeneous applications and platforms for the B2B E-commercial transactions. There are many difficulties to unify the total business on account of the insufficient policy to effectively manage business data and each business to be treated as several transactions. Therefore, a new concept "EIP(Enterprise Information Portal)", as a new business information system to maximize a business production and pliability, was raised. The staffs and customers can perform all tasks of enterprise through the enterprise portal. By using the portal, enterprises can perform tasks through the cooperation and can increase their productivities. Furthermore, by introducing the contents management system of enterprise portal, lots of information property could be effectively managed and the communication functions like E-mail and messenger makes to hold new news and knowledge resources in common. By introducing the new IT strategy to minimize the complexity and maintenance cost of the enterprise IT infra and to maximize productivity and flexibility of business, SOA(Service Oriented Architecture) rises as a new paradigm at the viewpoint of business. So Web services appeared as an alternative in order to solve the obstacle factors to integrate services between enterprises. Web service is a new form of Web application. The integrated services between the intra- or extra- heterogeneous applications could accept an offer while user could not feel such as calling a method in the local computer. Therefore this thesis handled the communication between the portal to support the web service of SOA and the portlet by using WSRP protocol, and built all portlet by observing the JSR168 standard for the comparability with other portal frames. By appling the JSR168 and WSRP based portal framework in this paper, the common work space could be offered by one access point inside an enterprise and the business renovation could be accomplished easily by reusing and integrating the many program components which was made by lots of times and costs. Web service-based portal framework system, which was suggested in this paper supports the personal and cooperated environments and offers integrated management environment of business resources. But, because the knowledge management and transaction are impossible under this kind of environment, portlet ontology to classify and to manage the information of portlet in the portal system could be constructed. In case of appling the portlet ontology to portal system, an organic mutuality application which is based on the meaning treatment between the portal and each portlet is possible, and knowledge based portlet handling support is possible. If the ontology, which was applied in a portal system, is introduced to the business, the development cost will be reduced by the reuse of the existing resources. And competitive power and technical expertise could be ensured by furnishing an advanced information service.