Vim li cas kev rov qab los tseem ceeb?

Cov txheej txheem:

Vim li cas kev rov qab los tseem ceeb?
Vim li cas kev rov qab los tseem ceeb?

Video: Vim li cas kev rov qab los tseem ceeb?

Video: Vim li cas kev rov qab los tseem ceeb?
Video: Qhov Lus Zais Tob ntawm Neeg Leej Tub qhov Kev Rov Qab Los (Ntsiab Lus Tseem Ceeb) 2024, Hlis ntuj nqeg
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Kev Rov Qab tso cai rau kev ua tau zoo dua, tso sijhawm rau peb lub cev kho nws tus kheej hauv kev npaj rau kev cob qhia tom ntej, thiab txo qis kev pheej hmoo ntawm kev raug mob.

Dab tsi yog qhov tseem ceeb ntawm kev thaub qab?

Lub hom phiaj ntawm kev thaub qab yog txhawm rau tsim cov ntawv theej ntawm cov ntaub ntawv tuaj yeem rov qab tau thaum muaj cov ntaub ntawv tseem ceeb tsis ua haujlwmCov ntaub ntawv tseem ceeb tsis ua tiav tuaj yeem yog qhov tshwm sim ntawm hardware lossis software ua tsis tiav, cov ntaub ntawv kev noj nyiaj txiag, lossis ib qho xwm txheej tshwm sim los ntawm tib neeg, xws li kev tawm tsam tsis zoo (tus kab mob lossis malware), lossis kev rho tawm cov ntaub ntawv tsis raug.

Kev rov qab los yog dab tsi?

muaj peev xwm rov zoo los yog rov zoo: tus neeg mob tam sim no ntseeg tias rov qab tau zoo; rov qab poob ntawm nws cov peev txheej.

Yuav ua li cas rov qab tau hauv database?

Txhua qhov kev ua haujlwm ntawm koj cov ntaub ntawv tau piav qhia hauv lub cav ua ntej nws ua tiav ntawm koj cov ntaub ntawv. Qhov no yog ua kom paub tseeb tias qhov kev ua haujlwm tuaj yeem rov qab tau thaum muaj kev thov tsis raws sijhawm lossis kev ua haujlwm tsis ua haujlwm. Tshaj li kev nkag mus, lwm qhov tseem ceeb ntawm durability yog rov qab tau.

Yuav ua li cas sib koom ua ke?

Nws siv lub sijhawm ua haujlwm los txiav txim siab lub sijhawm thwj ntawm kev hloov pauvQhov no yog qhov feem ntau siv concurrency raws tu qauv. Lock-based raws tu qauv pab koj tswj qhov kev txiav txim ntawm kev sib cav sib ceg thaum lawv yuav ua. Cov txheej txheem raws sij hawm tswj xyuas kev tsis sib haum xeeb sai li sai tau thaum tsim kev ua haujlwm.

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