Video: Dab tsi yog hlais thiab tsuav hauv cov ntaub ntawv warehouse?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Qhov sib txawv tseem ceeb ntawm hlais thiab tsuav nyob rau hauv cov ntaub ntawv warehouse yog tus hlais yog ib qho kev ua haujlwm uas xaiv ib qhov loj me los ntawm qhov muab cov ntaub ntawv cube thiab muab ib tug tshiab subcube thaum lub tsuav yog ib qho haujlwm uas xaiv ob lossis ntau qhov ntev los ntawm qhov muab cov ntaub ntawv cube thiab muab ib tug tshiab subcube.
Ib yam li ntawd, koj tuaj yeem nug, dab tsi yog slicing hauv cov ntaub ntawv warehouse?
A hlais nyob rau hauv ib tug multidimensional array yog ib kem ntawm cov ntaub ntawv sib raug rau ib qho nqi rau ib lossis ntau tus tswv cuab ntawm qhov dimension. Txiav yog txoj cai ntawm divvying li lub voos xwmfab los rho tawm cov ntaub ntawv no. tion rau muab hlais . Nws yog ib qho tseem ceeb vim tias nws pab tus neeg siv pom thiab sau cov ntaub ntawv tshwj xeeb rau qhov loj me
slicing thiab dicing yog dab tsi? Slicing thiab dicing hais txog ib txoj hauv kev segmenting, saib thiab nkag siab cov ntaub ntawv hauv cov ntaub ntawv. Yog li ntawd hlais thiab dicing nthuav tawm cov ntaub ntawv hauv cov kev xav tshiab thiab ntau haiv neeg thiab muab kev pom ze rau nws rau kev tshuaj xyuas. Piv txwv li, ib daim ntawv tshaj tawm qhia txog kev ua tau zoo txhua xyoo ntawm ib yam khoom.
Sib piv, txhais tau li cas los ntawm hlais thiab tsuav muab piv txwv?
Rau hlais thiab tsuav yog txhawm rau rhuav tshem lub cev ntawm cov ntaub ntawv mus rau hauv qhov me me lossis tshuaj xyuas nws los ntawm cov kev xav sib txawv kom koj tuaj yeem nkag siab zoo dua. Rau piv txwv , tus kws ua zaub mov thawj zaug yuav txiav cov dos rau hauv cov hlais thiab ces txiav lub cov hlais mus rau hauv dices.
Dab tsi yog lub voos xwmfab hauv cov ntaub ntawv warehouse piv txwv?
Ib OLAP Lub voos xwmfab yog a cov ntaub ntawv qauv uas tso cai rau kev soj ntsuam ceev ntawm cov ntaub ntawv raws li ntau qhov Dimensions uas txhais cov teeb meem kev lag luam. Multidimensional kub rau kev tshaj tawm kev muag khoom yuav yog, rau piv txwv , muaj li ntawm 7 Dimensions: Tus Neeg Muag Khoom, Tus Nqi Muag Khoom, Thaj Chaw, Khoom Muag, Thaj Chaw, Lub Hlis, Xyoo.
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