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Research on Query Results Synthesis in Information Integration System

Author: MaLiang
Tutor: XuXueZhou
School: Xi'an University of Electronic Science and Technology
Course: Computer Software and Theory
Keywords: Information Integration The synthesis of query results Data quality Semantic conflicts
CLC: TP311.52
Type: Master's thesis
Year: 2008
Downloads: 32
Quote: 2
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Abstract


With the development and popularization of network and distributed technology , a large number of heterogeneous data sources come into being. In order to make better use of these resources there is an urgent need to address the integration of heterogeneous data sources . Heterogeneous Information Integration has become a hot research topic in the field of information . The synthesis of the query results is an important building blocks in heterogeneous information integration systems , its function is to query results from distributed data sources combined into a unified query results . Extracted directly from the data source query results due to the autonomy and heterogeneity of distributed data sources , there is a large number of data quality issues and semantic heterogeneity problems , which makes the synthesis of query results become difficult and complex . This paper introduces the concept of query results synthesis facing data quality synthetic query results , semantic heterogeneity and query results distribution mode , in-depth analysis and synthesis of query results in the the IIS information integration system is designed on the basis of framework. Synthesis of query results framework design the main achievement of the following functional modules : the query results cleaning processing module , data quality problems exist in the query results ; normalized module of the query results , the query results into a local data source mode structure standardized fragment global mode ; synthesis module of the query results , using certain synthetic strategies and algorithms to standardize the results fragment fusion integrated query results .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer software > Program design,software engineering > Software Engineering > Software Development
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