Video: Kimball methodology yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ralph Kimball yog tus kws sau ntawv muaj npe nrov ntawm cov ntaub ntawv khaws cia. Nws tsim txheej txheem hu ua dimensional modeling or the Kimball methodology . Qhov no txheej txheem tsom rau hauv qab-up mus kom ze , hais txog tus nqi ntawm cov ntaub ntawv warehouse rau cov neeg siv kom sai li sai tau.
Hauv qhov no, qhov txawv ntawm Kimball thiab Inmon methodology yog dab tsi?
Kimball vs Inmon nyob rau hauv cov ntaub ntawv warehouse architecture. Txawm li cas los xij, muaj qee qhov sib txawv hauv cov cov ntaub ntawv warehouse architectures ntawm ob tus kws tshaj lij: Kimball siv cov qauv seem xws li lub hnub qub schemas lossis snowflakes los npaj cov ntaub ntawv hauv cov ntaub ntawv seem thaum Inmon siv ER qauv hauv kev lag luam cov ntaub ntawv warehouse.
Ib sab saum toj, dab tsi yog lub tsev khaws ntaub ntawv raws li Kimball? Kimball txhais cov ntaub ntawv warehouse raws li "ib daim qauv ntawm kev lag luam cov ntaub ntawv tsim tshwj xeeb rau kev nug thiab kev tshuaj xyuas ". Kimball cov ntaub ntawv khaws cia architecture tseem hu ua cov ntaub ntawv warehouse tsheb npav (BUS).
Hauv qhov no, Kimball qauv yog dab tsi?
Kimball yog tus txhawb nqa ntawm txoj hauv kev rau cov ntaub ntawv warehouse tsim tau piav raws li hauv qab-up nyob rau hauv uas cov ntaub ntawv dimensional marts yog thawj zaug tsim los muab kev qhia thiab analytical muaj peev xwm rau cov lag luam tshwj xeeb xws li "Kev muag khoom" lossis "Kev tsim khoom".
Dab tsi yog qhov qauv qauv cov ntaub ntawv warehouse?
A Dimensional qauv yog ib tug database qauv uas yog optimized rau cov lus nug hauv internet thiab Cov ntaub ntawv khaws cia cuab yeej. Nws yog suav nrog "qhov tseeb" thiab " qhov ntev "Tables." Ib qho "qhov tseeb" yog tus lej lej uas tus lag luam xav suav lossis suav.
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