Video: Lub sijhawm tiag tiag cov ntaub ntawv warehouse yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A tiag - lub sij hawm cov ntaub ntawv warehouse yog ib qho uas tau txais, ntxuav, hloov pauv, khw muag khoom, thiab tshaj tawm cov ntaub ntawv hauv sijhawm tiag . Ib qho nquag cov ntaub ntawv warehouse Ntawm qhov tod tes, ua haujlwm hauv qhov tsis yog- tiag - sij hawm hom teb nrog ib-lossis-ntau dua OLTP systems.
Tsis tas li ntawd, dab tsi yog nyob ze ntawm lub sijhawm cov ntaub ntawv warehouse?
Cov nyob ze tiag - lub sij hawm cov ntaub ntawv warehouse tshem tawm qhov loj batch qhov rais thiab hloov kho DW ntau ze rau tiag - sij hawm . Raws li ntau cov ntaub ntawv cov peev txheej tau tuav hauv huab, cov koom haum yuav tsum tau xyuas kom meej tias lawv nyob ze tiag - sij hawm kev daws teeb meem tuaj yeem haum rau ob qho tib si huab thiab hauv tsev raws li cov ntaub ntawv qhov chaw.
Vim li cas nws tseem ceeb rau lub dav hlau siv lub sijhawm tiag tiag cov ntaub ntawv khaws cia? Nws yog tseem ceeb rau lub dav hlau siv ib tug tiag tiag - lub sij hawm cov ntaub ntawv warehouse vim lawv yuav tsum paub, qhov tseem ceeb, plaub W's; Leej twg, dab tsi, Thaum twg, thiab qhov twg. Qhov kev siv ntawm tiag - cov ntaub ntawv sijhawm tso cai rau txhua feem ntawm cov cov dav hlau system taug qab tus neeg siv khoom los ntawm txhua kauj ruam ntawm lawv txoj kev mus ncig, thiab yav dhau los cov ntaub ntawv.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog ib txwm cov ntaub ntawv warehouse?
Hauv ib puag ncig IT ib txwm, tsoos cov ntaub ntawv warehouses ingest, qauv, thiab khw cov ntaub ntawv los ntawm ib qho Extract, Hloov, thiab Load process (ETL). Cov hauj lwm ETL no yog siv los txav ntau ntau cov ntaub ntawv nyob rau hauv ib tug batch-oriented yam thiab feem ntau yog teem rau khiav txhua hnub.
Cov ntaub ntawv khaws cia hauv cov ntaub ntawv li cas?
Cov ntaub ntawv yog feem ntau khaws cia rau hauv ib lub tsev khaws ntaub ntawv los ntawm cov txheej txheem rho tawm, hloov pauv thiab thauj khoom (ETL), qhov twg cov ntaub ntawv tau muab rho tawm los ntawm qhov chaw, hloov mus rau qhov zoo cov ntaub ntawv thiab ces loaded rau hauv ib lub tsev khaws khoom.
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