多數(shù)據(jù)庫中間件緩沖區(qū)系統(tǒng)的關(guān)鍵技術(shù)研究.pdf

1、Y7S63S7分類號(hào)TP31113學(xué)校代號(hào)10561uDc——密級(jí)——學(xué)號(hào)200235300201060鰳聾角≯蟹夕久誓SOUTHCHlNAUNlVERSfTYOFTECHNOLOGY碩士學(xué)位論文多數(shù)據(jù)庫中間件緩沖區(qū)系統(tǒng)的關(guān)鍵技術(shù)研究學(xué)位申請(qǐng)人導(dǎo)師姓名及職稱專業(yè)名稱研究方向所在學(xué)院論文提交日期胡鏡林齊德昱教授計(jì)算機(jī)軟件與理論網(wǎng)絡(luò)計(jì)算與集成計(jì)算機(jī)學(xué)院20055蘭塑墨三查堂堡主蘭垡笙奎____________●___■____l______

2、______●_。__●_●_________________________。。。。。。。。。?！灰籄bstractWiththeincreasingdemandofdatabaseapplication，moreandmoreuserswanttoaccessandprocessmanydistributeddatasource，transparentlyHowever，thesedatasou

3、rcesdifferfromthephysicalandlogicalaspectTraditionaldataintegratingtechniquescannotsatisfyusers’SdemandofacquiringdataroundlyHence，theresearchesonintegrationofvariousdataresourcesindistributedandheterogeneousenvironmentb

4、ecomeallimportantquestionNowdays，thereatenospecialmiddlewareproductstosupporttheMultidatabaseaccessSomeexpedientsarealwaysusedsuchasthemethodbasedonXMLandtheorientedobjectaccessinginterfacetodealwiththeproblemTherearenos

5、tandardizatiordservizationmethodsofdatabaseintergration，andtheexistingmethodshaven’treachedthetheheightofMiddlewareThemultidatabasemiddlewaremodelputforwardbyourtarget—teamcansupporttheheterogenousandindependentdata，‘‘Sp

6、ushing／access／integration”，andatthesametime，supportthethepushingdata’S“hotplug／unplug”，eventdrive，insentiveidentity，safetycontrol，concurrentcontrol，acessprocesscontrolandoutputintegrationetcThus，itcansatisfytheheterogeno

7、usandindependentdata’Saccess／userepeany／integration，andSOwecanusethemultidatabaseasthesimplerelationdatabase，whichiscompatiblewiththestandardSQLandobject—orientedinterfaceFirstlyweintroducethebasalknowledgeandpresentstud

8、yofthemultidatabasetechnologyNext，wegiveamultidatabasemiddlewarearchitectureproposedbyourtarget—teamwhichcanbedividedintoseveralparts：datasourceslevel，thepushing—upmachine，integrationlevel，MDBServerTheemphasisofthepaperi

9、sthedesignandrealizationoftheintegrationlevel一thedatabuffersystemSecondlywediscussonekeyproblemofthebuffersystemmodeintegrationBecauseofdifferentdatamodedatadefinition&manipulationlanguageanditssyntaxandsemantic，modeinte

10、grationisaimportantquestionwhichneeddeepresearchThispaperofferawholemodeintegrationtheory：commondatamodel；modemapping；modeintegrationalgebra；conflictcategoryanditssettlementmethodThirdly，wediscussanotherkeyproblemtransac

11、tionmanagementTherearethreekindsoftransactionsinthemultidatabase，globaltransaction，globalsub—transactionandlocaltransactionGlobaltransactioncanaccessthedatafromdifferentlocaldatabase；sub—transactionandlocaltransactionare