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时间:2017-07-27
《一种基于关系数据库的xml文档存储和查询的方法 硕士毕业论文》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、一种基于关系数据库的XML文档存储和查询的方法ARDB-BasedApproachtoStorageandQueryofXMLDocumentContentsChapter1Introduction………………………………………………………………11.1Researchsituationathomeandabroad……………………………………………11.2Themainworkinthethesis…………………………………………………………31.3Structureofthethesis…………………………………………………………4Chapter2BackgroundofXM
2、L………………………………………………………52.1OriginandcharacteristicofXML……………………………………………………52.2TypesofXMLdocument……………………………………………………………62.2.1XMLdocument…………………………………………………………………62.2.2DTDdocument…………………………………………………………………72.2.3XMLSchema……………………………………………………………………72.3QuerylanguageofXML……………………………………………………………82.3
3、.1BasicsyntaxofXPath…………………………………………………………82.3.2Calculationofthepathexpression……………………………………………102.4HeterogeneitybetweenXMLandRDB……………………………………………11Chapter3Storagetransformationbasedonpath…………………………………133.1Storagestructurebasedonpath……………………………………………………133.1.1ValueTable……………………………………………………………
4、……133.1.2No_Value_Table……………………………………………………………153.2Storagemappingalgorithm………………………………………………………16Chapter4Mechanismofqueryprocessing…………………………………………184.1Transformationrulesoflinearpathexpression……………………………………184.1.1Simplepathincludingparents-childonly……………………………………194.1.2Simplepathincludinganc
5、estor-descendant……………………………………194.2Processingofnon-linearpathexpression…………………………………………22Chapter5Furtheroptimizationofstorageandquery………………………………255.1Schemaofstorageoptimization……………………………………………………255.2Schemaofstorageoptimization……………………………………………………26Chapter6Designandimplementofthesystem……………
6、………………………286.1Wholedesignframeworkofthesystem……………………………………………286.2Functionofthesystemmodules……………………………………………………286.2.1XML-parser……………………………………………………………………286.2.2Storageprocessor………………………………………………………………306.2.3Queryprocessor………………………………………………………………316.3Experimentresultandanalysisofthesystempe
7、rformance……………………31Conclusion……………………………………………………………………………34Reference………………………………………………………………………………36Acknowledgment………………………………………………………………………40摘要XML已成为Web上数据表示、集成和交换的标准,它的格式简单、自我描述能力强,实现了内容、结构和表现三者的分离,更适合于数据表示和交换。近年来,XML在各个领域得到了广泛的使用,Web上已经涌
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