Cov txheej txheem:
Video: Puas yog Azure SQL cov ntaub ntawv warehouse columnar?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov ntaub ntawv khaws cia yog ib feem tseem ceeb ntawm huab-raws li, kawg-rau-kawg loj cov ntaub ntawv daws. SQL ntawv Analytics khw muag khoom cov ntaub ntawv hauv cov rooj sib txheeb nrog columnar khaws cia. Hom ntawv no ho txo cov cov ntaub ntawv cov nqi khaws cia, thiab txhim kho cov lus nug kev ua haujlwm. Ib zaug cov ntaub ntawv yog khaws cia, koj tuaj yeem khiav analytics ntawm qhov loj heev.
Hais txog qhov no, Microsoft Azure SQL cov ntaub ntawv warehouse yog dab tsi?
Azure SQL Data Warehouse yog huab-based enterprise cov ntaub ntawv warehouse uas leverages loj heev thaum uas tig mus ua (MPP) kom ceev nrooj cov lus nug nyuaj hla petabytes ntawm cov ntaub ntawv . Siv SQL Data Warehouse raws li ib feem tseem ceeb ntawm ib tug loj cov ntaub ntawv daws.
Ib qho tseem yuav nug, qhov txawv ntawm Azure SQL database thiab Azure cov ntaub ntawv warehouse yog dab tsi? Azure SQL Database yog kev sib txheeb database -as-kev pabcuam siv Microsoft SQL ntawv Server Engine (ntau dua); Azure SQL Data Warehouse yog ib qho kev sib txuas loj heev (MPP) huab-raws li, scale-out, kev sib raug zoo database muaj peev xwm ua cov ntim loj ntawm cov ntaub ntawv (ntxiv);
Kuj paub yog, yog SQL cov ntaub ntawv warehouse?
SQL ntawv database feem ntau yog siv rau kev lag luam hauv online, thaum a cov ntaub ntawv warehouse feem ntau yog siv rau hauv online analytical processing.
Kuv yuav tsim ib lub tsev khaws ntaub ntawv hauv Azure li cas?
Tsim ib lub tsev khaws ntaub ntawv
- Nyem Tsim ib qho chaw nyob rau sab laug sab laug ntawm lub Azure portal.
- Xaiv Databases los ntawm nplooj ntawv tshiab, thiab xaiv SQL Data Warehouse nyob rau hauv Featured ntawm nplooj ntawv tshiab.
- Sau daim ntawv SQL Data Warehouse nrog cov ntaub ntawv hauv qab no:
Pom zoo:
Puas yog TIFF cov ntaub ntawv yog cov ntaub ntawv vector?
TIF - (los yog TIFF) sawv cev rau Tagged Image File Format thiab yog cov ntaub ntawv loj loj. Cov ntaub ntawv TIF feem ntau yog siv rau cov duab hauv kev luam ntawv vim tias cov ntaub ntawv tsis poob cov ntaub ntawv lossis zoo li JPEG ua. Nws yog cov ntaub ntawv vector uas tuaj yeem muaj cov ntawv nyeem nrog rau cov duab thiab cov duab kos
Lub rooj twg muaj cov ntaub ntawv ntau yam hauv cov ntaub ntawv warehouse?
Cov ntaub ntawv tseeb muaj ntau cov ntaub ntawv nyob rau hauv cov ntaub ntawv warehouse. Multidimensional database yog siv los txhim kho 'online analytical processing' (OLAP) thiab cov ntaub ntawv warehouse
Ntev npaum li cas cov ntaub ntawv tuaj yeem khaws cia hauv cov ntaub ntawv warehouse?
10 xyoo Yog li ntawd, cov ntaub ntawv khaws cia hauv lub tsev khaws 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 .
Vim li cas kem taw qhia cov ntaub ntawv khaws cia ua cov ntaub ntawv nkag ntawm disks sai dua li kab qhia cov ntaub ntawv khaws cia?
Kem oriented databases (aka columnar databases) yog qhov tsim nyog rau kev ntsuas kev ua haujlwm ntau dua vim tias cov ntaub ntawv hom ntawv (kem hom) qiv nws tus kheej kom nrawm dua cov lus nug ua - scans, aggregation thiab lwm yam. Ntawm qhov tod tes, kab oriented databases khaws ib kab (thiab tag nrho nws. kab) contiguously
Hom ntaub ntawv twg ntawm Hadoop tso cai rau columnar cov ntaub ntawv cia hom?
Columnar ntaub ntawv tawm tswv yim (Parquet, RFile) Qhov tseeb hotness nyob rau hauv cov ntaub ntawv tawm tswv yim rau Hadoop iscolumnar cov ntaub ntawv cia. Yeej qhov no txhais tau hais tias tsis yog cia li khaws cov kab ntawm cov ntaub ntawv nyob ib sab rau ib leeg koj kuj khaws cov kab ntawv nyob ib sab. Yog li datasets tau muab faib ua ob qho tib si horizontally thiab vertically