分布式并行數(shù)據(jù)庫(kù)系統(tǒng)DPSQL中分布式查詢(xún)和分布式事務(wù)的設(shè)計(jì)與實(shí)現(xiàn).pdf

1、電子科技大學(xué)碩士學(xué)位論文分布式并行數(shù)據(jù)庫(kù)系統(tǒng)DPSQL中分布式查詢(xún)和分布式事務(wù)的設(shè)計(jì)與實(shí)現(xiàn)姓名：查小科申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：計(jì)算機(jī)系統(tǒng)結(jié)構(gòu)指導(dǎo)教師：張旭中劉心松2003.3.4AbstractAstheapp]icatonofdistributedcomputingisusedmuchmorewidely，distributeddatabasebecomesasignificantpartofinformationmanagement

2、Itavoidsalotofdisadvantagesofconventionalcentralizeddatabaseandisapplicab]etomanysituationsDistributeddatabaseisasetofdatawhichistheunitylogic，butinfactthesedataislocatedondifferentsitesItisofhighavailability，easyexpansi

3、bility，highconcurrency，highefficiencyandetcInd[stributedsystem，dataredundancyisamethodtoimprovethespeedofqueryandtheavailabilityofsystemDistributedqueryshouldshieldthelowerleveldetailsofdataredundancyfromendusers，distrib

4、utedtransactionshouldensuredatafromdisaccordThispaperintroducesbasicconceptionsofdistributeddatabasefirstly，discussesdistributedtransactionandconcurrentcontrol，describesthedevelopmentprototypeMySQL’scharacters，architectu

5、reandexecutivemechanism，thenshowstheskeletonmodelofDPSOLandexposesthestrategyandalgorithmofdistributedqueryanddistributedtransactionatlastanalyzestheextraexpensesandresponsedelayofdistributedprocessesThispaperexposesthei

6、mplementationmechanismofdistributedqueryanddistributedtransactionemphaticallYDistributedqueryusesthestrategyof“readodewritea11”Soinsuchasystemifuser’srequestsareread—onlyforthemostpartandthedistributionofdataredundancyis