Research And Realization Of Index-Searching Technique Of XML Document With Relatively Deterministic Format

With the fast development of modern network technology, XML, as a extensible markup language with particular characteristics and advantages, makes it possible to carry out deep application on Internet. XML will become the new standard format of data express and data transportation on Internet instead of HTML step by step in the future. XML query is an important area of the study on XML technology. Because data in XML documents has characteristics of nested structure and incomplete information mode, which makes its structure very complex, it is so difficult to deaf with XML query. Traditional traverse technologies based on tree structure can not meet the demand to deal with complex XML documents. So how to query the data in XML documents quickly and accurately has already become an urgent problem to be solved imminently.In this paper, based on the deep studying of the technology to query XML documents, it puts stress on the technology of index-based query, and studies the question how to improve the efficiency to query, meanwhile, it structures the high efficiency query on RDF-XML documents, and realizes all the code to algorithm. Through the analysis on validity, it proves the structure of XML document index can reduce the cost of query to RDF-XML documents.It also designs a system to realize a retrieval system for law document based on XML. Thought the contrast and analysis to traditional query technology by the experiments in a certain scale of date collection, this paper tests the availability of method about index-based query.