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Research on Strategies of Indexing in Dataspace

Author: ChenShuang
Tutor: LiLingJuan
School: Nanjing University of Posts and Telecommunications
Course: Computer Software and Theory
Keywords: Data space Data Management Index Heterogeneous data
CLC: TP311.13
Type: Master's thesis
Year: 2012
Downloads: 34
Quote: 0
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Abstract


In recent years , with the explosive growth of web data , the distribution of hundreds of millions of terabytes of data in the world on countless servers . Powerless traditional database management system for personal data management in heterogeneous data , data space is born out of this new data management technology . The data space is the face of heterogeneous data and how to efficiently organize and manage the information , so that enterprises or individuals to easily share data , and can quickly , accurately and comprehensively to the information users need to search for information science fIELD facing a big challenge. Indexing strategy in the data space research , reviewed Research status and application of the data space ; introduces the basic concepts and features of the data space , focusing on analysis of the data space in three levels of heterogeneity ; overview of the query and index data space needs , analysis of the full-text search engine toolkit Lucene indexing and search mechanisms ; others already thought through improved design of a new heterogeneous tolerance data space index strategy ; give index based on the strategy building process as well as the five forms of heterogeneous ( respectively attribute names and contact information of the heterogeneity of the same name , to distinguish heterogeneous problem the Contact instance and instance , keywords similar to a certain degree of probability of the different configuration problems , attributes , or contact with a certain probability similar heterogeneous problems as well as instances of similar heterogeneous certain probability ) solution , and also describes a method to sort query results by changing the number of index occurred . Finally, based on the Lucene text file and heterogeneous data index keyword and structured queries , the index number of the access and solve similar heterogeneous problem , and index optimization and update on this basis , the assessment of the performance of the new index , and verify its effectiveness . This paper made ??a useful exploration of indexing technology in the data space .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Programming > Database theory and systems
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