2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Denormalization yog ib lub tswv yim siv ntawm cov ntaub ntawv yav dhau los-ib txwm ua kom nce kev ua tau zoo. Lub tswv yim tom qab nws yog ntxiv cov ntaub ntawv rov qab uas peb xav tias nws yuav pab tau peb tshaj plaws. Peb tuaj yeem siv tus cwj pwm ntxiv rau hauv lub rooj uas twb muaj lawm, ntxiv cov ntxhuav tshiab, lossis tseem tsim cov rooj zaum uas twb muaj lawm.
Vim li cas denormalization siv hauv database?
Denormalization yog cov txheej txheem siv los ntawm cov thawj coj database txhawm rau txhim kho kev ua haujlwm ntawm lawv cov ntaub ntawv database. Txoj kev no tso cai rau peb ntxiv cov ntaub ntawv rov ua dua rau hauv cov ntaub ntawv ib txwm siv los daws teeb meem nrog cov lus nug database uas sib koom ua ke cov ntaub ntawv los ntawm ntau lub rooj rau hauv ib lub rooj.
Dab tsi yog denormalization thaum twg koj yuav siv nws?
Denormalization yog ib lub tswv yim uas database managers siv los ua kom cov kev ua tau zoo ntawm database infrastructure. Nws koom nrog kev ntxiv cov ntaub ntawv rov ua dua rau cov ntaub ntawv qub kom txo tau qee yam teeb meem nrog cov lus nug database uas muab cov ntaub ntawv los ntawm ntau lub rooj rau hauv ib lub rooj.
Vim li cas cov neeg tsim qauv siv qhov tsis zoo?
Denormalization yog qhov txhob txwm muab cov kab sib tshooj hauv ntau lub rooj, thiab nws ua rau cov ntaub ntawv rov ua dua. Piv txwv 1: Xav txog tus qauv tsim uas ob lub rooj muaj ib kem uas muaj cov chaw nyob ntawm cov tsev khaws khoom. Yog tias qhov kev tsim no ua rau kev koom ua haujlwm tsis tsim nyog, nws yuav yog qhov tsim nyog rov ua dua.
Vim li cas cov ntxhuav Denormalizedsiv nyob rau hauv cov ntaub ntawv warehouses?
Cov ntaub ntawv khaws cia cov tswv yim no yog siv txhawm rau txhim kho kev ua haujlwm ntawm cov ntaub ntawv database. Denormalization hu cov ntaub ntawv rov qab mus rau lub tsev khaws ntaub ntawv ib txwm ua kom txo qis lub sijhawm khiav ntawm cov lus nug tshwj xeeb uas sib sau cov ntaub ntawv los ntawm ntau lub rooj rau hauv ib qho.
Pom zoo:
Cov ntaub ntawv qhia ntawv puas txhawb nqa cov ntaub ntawv kawm?
Cov ntaub ntawv qhia yuav tsum txhawb nqa txoj kev kawm lub tswv yim, cov hom phiaj thiab cov hom phiaj ntawm Cheeb Tsamthiab cov hom phiaj ntawm cov ntaub ntawv kawm uas cov ntaub ntawv yuav raug siv. … Cov ntaub ntawv qhia yuav tsum ua tau raws li cov qauv zoo ntawm cov ntsiab lus tseeb thiab kev nthuav qhia.
Thaum cov ntaub ntawv tshiab cuam tshuam nrog kev muab cov ntaub ntawv qub no hu ua?
Nrog retroactive cuam tshuam, cov ntaub ntawv tshiab cuam tshuam lub peev xwm rov qab cov ntaub ntawv qub. Nrog kev cuam tshuam tsis zoo, nws yog qhov rov qab: cov ntaub ntawv qub cuam tshuam qhov rov qab los ntawm cov ntaub ntawv tshiab tau kawm.
Daim ntawv teev npe cov neeg siv cov ntaub ntawv sharepoint nyob qhov twg?
Daim Ntawv Teev Npe Cov Neeg Siv SharePoint tuaj yeem nkag los ntawm qhov browser los ntawm navigating rau “/_catalogs/users/simple. aspx"los ntawm koj qhov chaw. Koj tuaj yeem pom lub screenshot ntawm SharePoint Online cov neeg siv cov ntaub ntawv teev npe rau ntawm kuv qhov chaw SharePoint Online.
Puas yog cov ntaub ntawv sib tw cov ntaub ntawv raug cai?
Kev tsim "Cov ntaub ntawv cog lus" yog cov ntaub ntawv sau uas txhais lub luag haujlwm, kev lav phib xaub, thiab "Ua haujlwm" raws li Daim Ntawv Cog Lus Tsim Kho, thiab raug cai lij choj rau ob tog (Tswj thiab tus neeg cog lus).
Cov ntaub ntawv twg muaj cov ntaub ntawv bituminous?
Nws muaj ob chav kawm ntawm cov khoom siv bituminous: (1) asph alt; thiab (2) tar. Cov ntaub ntawv no feem ntau yog siv los ua dej-pov thawj sealants, thiab ua cov ntaub ntawv los tuav cov aggregate ua ke nyob rau hauv bituminous pavements. Dab tsi yog cov khoom siv bituminous?
