Cov txheej txheem:
Video: Yuav ua li cas yog lub xeev nyob rau hauv database?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A raws li lub xeev database yog ib qho uas tag nrho cov ntaub ntawv kev ncaj ncees txwv tau txaus siab. Ua kom tiav a raws li lub xeev database , kev lag luam yuav tsum tau ua database los ntawm ib lub xeev zoo ib yam rau lwm tus.
Tom qab ntawd, dab tsi yog cov ntaub ntawv sib xws hauv database?
Kev sib raug zoo hauv database systems hais txog qhov yuav tsum tau muaj uas tau muab database kev hloov pauv yuav tsum hloov cuam tshuam cov ntaub ntawv tsuas yog nyob rau hauv txoj kev tso cai. Ib qho cov ntaub ntawv sau rau database yuav tsum siv tau raws li tag nrho cov kev cai, nrog rau kev txwv, cascades, triggers, thiab ib qho kev sib xyaw ua ke ntawm no.
Tom qab ntawd, lo lus nug yog, dab tsi yog qhov sib xws nrog piv txwv? Lub ntsiab txhais ntawm sib xws txhais tau tias thickness los yog ib yam dab tsi nyob twj ywm tib yam, yog ua nyob rau hauv tib txoj kev los yog zoo tib yam. Ib piv txwv ntawm sib xws yog ib tug ntses uas yooj yim rau ncuav los ntawm lub lauj kaub. Ib piv txwv ntawm sib xws yog thaum txhua qhov kev xeem uas cov tub ntxhais kawm xeem tau muab qhab nia siv tib qhov qhab nia.
Ib yam li ntawd, dab tsi yog qhov tsis sib haum xeeb hauv DBMS?
Txhua hom kev nkag mus rau hauv cov ntaub ntawv uas muaj nyob nruab nrab ntawm cov lus pib thiab xaus kev sib pauv yog suav tias yog ib qho kev sib pauv hloov pauv. Thaum lub sij hawm ua lag luam database yog tsis sib xws . Tsuas yog thaum lub database tau cog lus rau xeev yog hloov ntawm ib lub xeev zoo ib yam rau lwm tus.
Koj ua li cas kom cov ntaub ntawv sib xws?
Ua kom cov ntaub ntawv sib xws
- Kev siv cov ntaub ntawv qhia kev ncaj ncees rau cov ntaub ntawv sib xws. Kev xa mus ncaj ncees kom ntseeg tau tias cov ntaub ntawv zoo ib yam ntawm cov rooj.
- Siv cov xauv rau cov ntaub ntawv sib xws. Locks tuaj yeem ua kom ntseeg tau tias cov ntaub ntawv tseem nyob ib puag ncig txawm tias ntau tus neeg siv sim nkag mus rau tib cov ntaub ntawv tib lub sijhawm.
- Tshawb xyuas cov ntaub ntawv sib xws.
Pom zoo:
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