Video: Dab tsi yog ib txwm ntawm database?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov Ib txwm Nyob rau hauv pab pawg muaj feature yog ib tug high-muaj thiab kev puas tsuaj-recovery daws uas muab ib tug enterprise-theem lwm txoj rau database tsom iav. Taw qhia hauv SQL Server 2012 (11. x), Ib txwm Nyob rau hauv pab pawg maximizes muaj cov neeg siv databases rau ib tug enterprise.
Kuj nug, dab tsi yog SQL ib txwm nyob?
SQL ntawv Server AlwaysOn muab ib tug high-muaj thiab Disaster-recovery daws rau SQL ntawv Server 2012. Nws ua rau kev siv uas twb muaj lawm SQL ntawv Server nta, tshwj xeeb yog Failover Clustering, thiab muab cov peev txheej tshiab xws li pab pawg muaj. Nws aims muab ntau granular tswj kom ua tiav High Availability.
Kuj Paub, puas yog SQL AlwaysOn xav tau pawg? Nws txhawb multisite pawg hla subnets uas ua rau tsis ua haujlwm ntawm SQL ntawv Server piv txwv hla cov chaw zov me nyuam, tab sis qhov no xav tau replication ntawm cov ntaub ntawv ntawm kev sib koom cia nyob rau hauv txhua qhov chaw ntawm cov ntaub ntawv.
Tib neeg kuj nug, pes tsawg AlwaysOn muaj pab pawg tuaj yeem teeb tsa hauv ib txwm nyob?
Koj ua tau muaj ntau tshaj ib AlwaysOn Availability Group ntawm koj qhov piv txwv, tab sis databases tsis tuaj yeem koom nrog ntau dua ib qho pab pawg.
Peb puas tuaj yeem teeb tsa ib txwm tsis muaj pawg?
Read-Scale muaj pab pawg nyob rau hauv pawg tsis muaj Clusterless. Hauv SQL Server 2017 peb tuaj yeem teeb tsa clusterless Availability Group hauv SQL Server tsis muaj ua tsis tiav pawg configuration ntawm kev koom nrog replicas. Nws ua tau ua tiav ntawm ob lub Windows thiab Linux raws li SQL Servers.
Pom zoo:
SQL ib txwm nyob ntawm pawg yog dab tsi?
Taw qhia. SQL neeg rau zaub mov Ib txwm Nyob rau yog ib qho kev hloov kho tsim los muab kev muaj siab (HA) thiab kev puas tsuaj rov qab (DR). Nws yog tsim los ntawm Windows Failover Cluster, tab sis peb tsis xav kom muaj kev sib koom ua ke ntawm cov pawg tsis ua haujlwm. Tag nrho cov nodes koom yuav tsum yog ib feem ntawm pawg tsis ua haujlwm
Puas yog qhov sib npaug ntawm ob lub polynomials ib txwm yog polynomial?
Qhov sib npaug ntawm ob lub polynomials yeej ib txwm yog polynomial, yog li qhov sib txawv ntawm ob polynomials kuj tseem yog ib qho polynomial
Cov txheej txheem tsom xam yog dab tsi nws txawv ntawm txoj hauv kev ib txwm muaj?
Kev xam phaj ib txwm ua rau tus neeg xam phaj pom tag nrho cov kev xav ntawm tus neeg sib tw, thaum qhov kev xam phaj ua ke muab kev ntsuam xyuas tshwj xeeb ntxiv raws li kev txheeb xyuas cov haujlwm ntxaws
Dab tsi yog cov teeb meem ntawm kev tswj cov ntaub ntawv hauv cov ntaub ntawv ib txwm muaj?
Nyob rau tib lub sijhawm, qhov kev tswj hwm cov ntaub ntawv ib puag ncig tsim teeb meem xws li cov ntaub ntawv rov ua dua thiab tsis sib xws, cov kev pab cuam-cov ntaub ntawv dependence, inflexibility, tsis muaj kev ruaj ntseg, thiab tsis muaj cov ntaub ntawv sib qhia thiab muaj
Dab tsi yog qhov sib txawv tseem ceeb ntawm kev txhaj tshuaj SQL ib txwm thiab qhov muag tsis pom kev txhaj tshuaj SQL?
Qhov muag tsis pom kev txhaj tshuaj SQL yog ze li zoo ib yam li ib txwm SQL Txhaj, qhov sib txawv tsuas yog txoj kev uas cov ntaub ntawv tau muab los ntawm cov ntaub ntawv. Thaum lub database tsis tso tawm cov ntaub ntawv mus rau nplooj ntawv web, tus neeg tawm tsam raug yuam kom nyiag cov ntaub ntawv los ntawm kev nug cov ntaub ntawv cov lus nug tseeb lossis tsis tseeb