負荷預(yù)測多維數(shù)據(jù)模型及實視圖研究.pdf

1、中南大學(xué)碩士學(xué)位論文負荷預(yù)測多維數(shù)據(jù)模型及實視圖研究姓名：謝民主申請學(xué)位級別：碩士專業(yè)：計算機應(yīng)用技術(shù)指導(dǎo)教師：蔣外文王加陽20030301英文摘要AbslractBasedonthecharacteristicsofthe11IstorIcaldatasetoIIoadtorecas“兒gsystem，forecastingmethodsandtherequiremenfsofOLAPandDMtooIsfordatasources，

2、thispaperresearchesthetheoriesofmultidi￡ncnsionaldatamodelandmate“alizedViewsmaintenanceinordertoimprovet11eindependenceandmaintainabiJityofthcdatasourcesandtheefIjciencyoftheOLAPandDMThepaperhasfbufchapfersInthefirstcha

3、pter，theimportance，presentsituationandproblemsofloadfbrecastingareintroducedsimpIyTosolvetheproblems，astrategyofbuildingadatawarehousetosupporttheloadfbrec4stingsystemisproposedTobuildthedatawarehouse，therearetwoimportan

4、ttheoreticalproblemsaboutmultidimensionaldatanlodelingandmaterializedViewsBoththeproblemsareenlphasizedattheendofthech印ter，anddiscussedprofbundlyinthefbllowingchaptersThesecondchapterbeginswiththegeneraIreviewoftheimport

5、allceandresearchingstatusofmultidimensjonaldatamodeling，thenpointsouttheIimitationsoftheexistingmultidimensionaldatamodelsInordertomodelthemultidimensionalstructureoftheloadforecastjngsystem’sdataset，attlleendofthechapte

6、r，thepaperintroducesanewmodeItosolvetheproblemsofdifferentdimensionssharingacommonbottomlevelofhierarchiesandincorporatingincompletedatasetoffinegranularityandcomple把datasetofcoarsegfanuIaritylogicalIytosupportOLAPwhichh

7、adnotbcensolvedbyprevenientmodelsFirst，thethirdchaptertalksabouttheresearchingachievementsonmaterializedViews，andthenonthebasisofloadfbrecasting，presentsanewmaterializedmaintenancealgo“thm，whichcanreducethespaceandtimeco

8、stofthematerializedviewsmaintenanceThefbufthchapterdiscusseshowtosupporttheloadfbrecastingusingthemultidimensionaldatamodela11dtheviewmaintenanceaIgorithmsthatthep印erpresentsbeforeFinally，theconclusionofthepaperisgivenan