Yoon Sun Hee  Chung Jin Wook

Vol. 6,  No. 2, pp. 425-438, Feb.  1999
10.3745/KIPSTE.1999.6.2.425

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In recent days network computing technologies have been developed rapidly and the extended use of Internet applications for enterprises such as intranet/extranet in and between enterprises has been increased enormously. Therefore the business in the future will be executed by virtual enterprise. Virtual enterprises which is based on information sharing between enterprises are composed of work processes related to information exchange between virtual enterprises, the team members who are representatives of the organizations that are participated in the actual business of virtual enterprises, and environment that are provided by supporting CALS(Continuous Acquisition and Life cycle Support or Commerce At Light Speed). Supporting system of IDE(Integrated Data Environment) for CALS implementation that is provided as an environment of virtual enterprises has to ensure the autonomies of local data and to provide the accessibility of heterogeneous database of enterprises on network transparently for giving user a single global view of data. This paper introduce the design and implementation of the database broker system that can be accessed data transparently by the users of participated enterprises in the integrated data environment supporting virtual enterprises. The system uses Java/CORBA technology in Web environment and Object Query Language (OQL) to process the queries of relational database system, object-oriented database system, and file information.