The Research And Realization Of The Information Sharing Technology About Library Heterogeneous Database

With the development of information technology, many libraries to strengthen the construction of information resources through the purchase of autonomy, self-built databases and other means, and the construction of the introduction of a variety of database resources, in particular by the Ministry of Culture Ministry of Finance and the implementation of the National Cultural Information Resources Sharing Project at all levels to implement vigorously the library, the library at all levels of e-books, electronic journals, databases and other digital network resources, rapid growth. In the face of a large number of data types and systems operating environment is not the same database of information-sharing needs of the more strongly. As a result, the Library of heterogeneous information-sharing database has important theoretical and practical value.In this paper, the author analyses the status of the heterogeneous database of Chongqing library, according to the XML and integration technologies, applies B/S, designs a system framework that is a heterogeneous data which is based on XML , thus solving the problem of integration of heterogeneous databases. The main work of the paper is:1.using the conversion technology and JAVA technology of XML and databases, developed the library heterogeneous data integration system, and achieved the main functions of the system.2. The system uses B / S, through XML queries terms user to resolve a number of heterogeneous database query, and have been structured with XML data between conversion, filtering and combines the results of inquiries, the final To achieve the integration of heterogeneous databases. System used the three system frame of user level, the application layer, the data level , has realized heterogeneous database integrative system.3. In the system, it limited the authority of the user to use the heterogeneous database, it solved the problem that the some of the heterogeneous database is not open because the copyright is not completely.The library heterogeneous database integration system has been applied to the Chongqing Library, running in good condition. The system played an important role in improving the utilization rate of database and mastering the reader's need of the database.