2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Hadoop yuav tsis hloov lub tsev khaws ntaub ntawv vim tias cov ntaub ntawv thiab nws lub platform yog ob txheej tsis sib npaug hauv Cov Ntaub Ntawv warehouse architecture. Txawm li cas los xij, muaj qhov tshwm sim ntau dua ntawm Hadoop hloov qhov sib npaug cov ntaub ntawv platform xws li kev sib raug zoo database tswj system.
Puas yog Hadoop siv rau cov ntaub ntawv warehouse?
Hadoop raws li Kev Pabcuam muab cov kev daws teeb meem kom tau raws li cov ntaub ntawv nce ntxiv thiab kev ua haujlwm xav kom cov ntaub ntawv khaws cia tsis tuaj yeem ua haujlwm ntxiv lawm. Nrog nws qhov ntsuas tsis txwv thiab kev xav tau nkag mus rau suav thiab khaws cia, Hadoop ua Kev Pabcuam yog qhov zoo tshaj plaws rau kev ua cov ntaub ntawv loj.
Dab tsi yog qhov txawv ntawm Hadoop thiab cov ntaub ntawv warehouse?
Ib qhov sib txawv tseem ceeb ntawm cov ntaub ntawv khaws cia thiab Hadoop yog qhov a cov ntaub ntawv warehouse feem ntau yog siv rau hauv ib qho kev sib raug zoo database uas ua haujlwm hauv nruab nrab khw. … Tsis tas li ntawd, Hadoop ecosystem suav nrog cov ntaub ntawv khaws cia txheej / kev pabcuam ua rau saum Hadoop core.
Yuav Hadoop hloov SQL?
Hadoop yog ib qho kev faib cov ntaub ntawv uas tuaj yeem khaws thiab ua cov ntaub ntawv loj heev ntawm cov khoos phis tawj. Hadoop los ntawm kev qhib qhov chaw yog sib xws nrog txhua lub platform vim nws yog Java-based. … Txawm li cas los xij, Hadoop tsis yog qhov hloov pauv rau SQL es lawv siv nyob ntawm tus kheej xav tau.
Koj puas xav tias Hadoop tuaj yeem hloov DBMS?
Lub Hadoop ecosystem yog tsim los daws cov teeb meem ntawm cov ntaub ntawv sib txawv dua li cov ntaub ntawv sib txheeb. Yeej Hadoop yuav yog qhov ntxiv rau RDBMS tab sis tsis yog hloov pauv. … koj tuaj yeem khaws cov ntaub ntawv khaws cia hauv HDFS cov ntaub ntawv los ntawm HIVE. (yuav siv tau SQL dhau HIVE…)
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.
Yuav ua li cas xa daim ntawv hloov kho tsis yog cov ntaub ntawv?
Txhawm rau tawm tswv yim tsis yog cov ntaub ntawv hloov kho, ua ntej hu rau tus tub ceev xwm rooj plaub uas thawj zaug cuam tshuam nrog daim ntawv thov kev npaj. Koj yuav tsum tau teeb tsa koj cov kev hloov pauv kom meej. Tus neeg lis haujlwm hauv rooj plaub yuav qhia rau koj paub yog tias koj tuaj yeem xa cov kev hloov pauv uas tsis yog cov khoom siv, lossis yog tias koj xav tau ua daim ntawv thov kev npaj tshiab.
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.
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?
