Research On Interoperability In Digital Library System

Interoperability in digital library system has drawn much attention of researchers in library science all over the world in recent years. Poor information retrieval, lack of interoperability between disparate systems and scarcity of manipulation mechanism of distributed data are the main problems in Internet. In order to solve these problems, digital library has been developed. Creating a favorable information environment, providing intelligent access to distributed data and making information ordered are the basic goals. To achieve all these goals, interoperability in digital library system must be settled.This thesis uses various methods, including document investigation and analysis, internet resource investigation and analysis, case study, synthesis, induce, etc., to study the problems related to interoperability in digital library system.This thesis includes: (1) After giving a concise discussion on following concepts, such as digital library, digital library system, interoperability, interoperability in digital library system, this thesis argues about interoperability from the systemic point of view. The crucial factor in interoperability is the rational architecture of digital library system; (2) By the analysis of research of interoperability in Digital Library System all over the world and the comparison of main distributed component model, such as CORBA, COM/DCOM, JavaBean, the conclusion is CORBA adept at interoperability in digital library system; (3) Through the analysis of two cases of CORBA application, this thesis confirms that CORBA + Java is a better method; (4) At last, SDLSIM (Simple Digital Library System Interoperability Model) is brought forward, in which CORBA and Java are applied. A few experiments are done, and the difficulties are pointed out.