本地封閉世界假設(shè)下數(shù)據(jù)分布策略的研究

1、大連理工大學(xué)碩士學(xué)位論文本地封閉世界假設(shè)下數(shù)據(jù)分布策略的研究姓名：林敏泓申請學(xué)位級別：碩士專業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：王秀坤20091216本地封閉世界假設(shè)下數(shù)據(jù)分布策略的研究TheResearchofFragmentandDistributionStrategiesBasedonLCWAAbstractA仃趾1SaCtionconsistsofaserialofoperations，andhasACIDpropertiesHowev

2、erinlargescaledistributedapplications，thetraditionaltransactionmodelisnotapplicableW曲acentralizeddatabasesystemdeveloping，distributeddatabasesystemhasbeendeveloping，anditistheproductofdatabasetechnologyandnetworktechnolo

3、gy111efragmentanddistributionofdatainthedistributeddatabaseareveryimportantArelationaldatabaseCallbeviewedasadirectedgraphconstructedbYtuplesandforeignkeyreferencesAtransactionmodelbasedonLocalClosedWorldAssumption，themo

4、deldividethedatainthelocalintothecontrolleddataandthereferenceddataaswellasdatareplication，isproposedItsfeatures，concurrencycontrolandcorrectnessarealsoinvestigatedanddemonstratedT11istransactionmodelisillustratedwithate

5、achingmanagementsystem，nliSP印erproposesamethodofdataextractionbasedonmultiroottree，insteadoftraditionalhorizontalfragmentandverticalfragmentofdataThemethodofdataextractionproposedbythispaperisdifferentfromdataextractiona

6、tthepresentstageTofacilitatedatareplicationandsharing，semanticrelativityandlogicallyindependenceshouldbesatisfiedwhenrelationaldataisextractedMultitreestructuresareemployedasclustersofsuchdataextractedfromarelationaldata

7、baseinthispaperThenthecorrespondingdataextractionapproachisproposedandimplementedWeevaluatetheextractionalgorithmonaTPCCdatabaseinOracle，demonstratingtheeffectivenessandgeneralizationoftheapproachAfterthedataextractionth

8、edatamustbeassignedtOsitessuitablyTIlispaperintroducesamethodofbenefitandestimationforassigningdataFinally，thepaperintroducestheframeofacloudPlatformandsetupit、)l，i也theopensourcetoolsKeyWords：LCWA；TransactionModet；Muttir