Research Into Digital Library System Architecture Based On SOA

The fusion of technology and humanity and the interaction between technology and humanity bring about the development of libraries.Library work is resource-based and service-oriented,and to meet the clients' requirement is its starting point and objective.The interaction of technology and humanity promotes clients' requirements in quality as well as quantity of resources and services on one hand,and brings forward on-demand requirement concerning the construction of digital library system on the other hand.It involves a system open to the introduction of advanced technology correspondingly and simultaneously.On-demand system may make swift reaction to the renovation and innovation requirement of service model and management model,which is likely to make come true an easier and more effective library cooperation,shared information resources and customer-oriented services.In the light of specific practice of digital library,the present "Information Island" and "Information Overload"phenomena are mainly derived from the "System Island" phenomenon.Solution to this constant problem lies in the construction of digital libraries.SOA(Service Oriented Architecture)provides a solution,which as background makes present research carried out.This article focuses on the research of digital library system architecture based on SOA(Service Oriented Architecture).The research is carried out with regard to present problems in digital library system,the research development of the digital library system architecture,relevant theoretical issues in digital library system and system architecture,SOA idea and technology framework analysis,induction and conclusion,and on basis of which how a digital library system architecture based on SOA can be established:?Study on the factors of digital library construction and build the construction factor model of digital library;? Study on the factors of digital library system structure and build the factor model of digital library system architecture;?Study on the analysis of service-oriented digital library system and build a analysis model;? Make reflections on service-oriented digital library system construction target,outline the general target of digital library system construction and make analysis on theoretical basis;? Make analysis of service-oriented digital library system architecture and service and build up the basic service system accordingly.At last the exploration of relevant mechanism and strategy is conducted on SOA-based digital library system realization from the perspective of institution organization.This paper believes that the consistency in overall objective of digital library system construction and the consistency in system operation flow make possible the realization of on-demand digital library system within a unified framework.The digital library software system founded on data standardization and service standardization is powerful in resources sharing and utilization and platform integration,bearing meaning and impact as profound as the practices of "with same car rail,with standard character".The main contributions of the article include:1.Based on the understanding of the construction of digital library and "major element theory",it establishes the major element model for digital library construction.Formed in a tetrahedron,the model is intended to tell that in the construction of digital library,whichever element or joint point as center or starting point should deal well with other elements or joints in the linear and plane relationship that work together to compose the organic library.The interaction in between promotes the growth of library and propels the prosperity of digital library cause.2.Based on the understanding of major elements of digital library construction,it builds a major elements model for digital library system construction,which reflects an aspect of digital library construction-system-centered digital library construction should represent the service-oriented basic thoughts in system construction.Elements relationship should be well conducted in the process of system construction,because they are all driving factors and restraining factors in system construction and system architecture design,which should be taken into a balanced consideration according to specific operation environment,technology environment and society environment.3.Based on the understanding of SOA and in combination with element model of digital library system construction,it builds a service-oriented digital library system analysis model.Service-oriented architecture is service-based and service is the key organic concept in service-oriented architecture.How to realize standard service division and service definition is the key to the success of service-oriented digital library system.The model is composed of two parts,which represents respectively possible means of service division realization and of three dimensions of service analysis.The model is a composition of elements analysis,business target analysis,top-down flow decomposition analysis,bottom-up technology analysis and so on,and the key of the model application lies in how to make proper match of business and technology in analysis,which may make come true the decomposition of standard service.This model also provides an analysis method for the composition of digital library modular system.4.The overall targets of digital library system construction are summarized,including "5A"system construction target,system construction "5R" target,"on-demand" system and "Business and IT Alignment" target,and the theoretical basis is analyzed.The overall target of system construction is supported by "Information Resource Sharing","Customer Service Library Theory","The Five Laws of Library Science",etc.,and the relationship among them is analyzed.The uniformity of overall target in system construction and the uniformity of system-related business process provide possibility for the construction of SOA-based digital library system under the unified framework.5.Combining present experts' research into system architecture and cases of digital library system in reality,under the guidance of the overall target of system construction and with the application of system analysis model,SOA-based digital library system architecture and service are analyzed and service-oriented basic service system in digital libraries is constructed.Categorization of this kind represents personal points of view.With the constraint of personal knowledge and experience,it is worth further negotiating and remains to be completed and perfected in practice.