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Unified Retrieval Of Heterogeneous Data Sources Based On Web Services

Posted on:2007-06-04Degree:MasterType:Thesis
Country:ChinaCandidate:J WeiFull Text:PDF
GTID:2208360185991332Subject:Computer application technology
Abstract/Summary:PDF Full Text Request
Along with the increasing of simulation application and simulation resources, simulation system scale expands unceasingly and more and more information enters into it. The simulation system contains various information resources; information description is not unified; information storage is distributed. Therefor, it is difficult for the users to search usefull information from heterogeneous data source. It is necessary to design a union search platform, which could integrate resources of different types, different structures and different settings. By using this platform, users could search heterogeneous data source under unified query interface, and search results would be displayed in uniform format.Web Services is a newly risen technology with characters of platform-independence, language-independence, simplity, high efficiency, expansibility. It is especially applicable to system integration and data transmission.After analysing shortcomings of the existent heterogeneous data source search systems, the framework of heterogeneous data sources union search based on Web Services is designed. Principles of heterogeneous data sources union search is discussed based on Web Services; structure and main functions of the system are analysed; Search Services Unified Model, Result Records Meta-data Model base on XML, corresponding algorithms for search services distribution and results fusion are proposed. A prototype system is implemented based on this design. Heterogeneous Data Source Union Search System base on Web Services can be implemented simply along with the good space-time performance. It also can unify heterogeneous data records by XML expediently and achieve transparent integration to heterogeneous data source's search interface, taking full advantage of web services mechanism's capability of loose coupling, fine encapsulation, high grade integration. This prototype system has applied initially in the Simulation Resources Repository System.
Keywords/Search Tags:Simulation Resource Repository, Web Services, Data Source, Heterogeneity, Search
PDF Full Text Request
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