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Video: Database yuam kev yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Dab tsi yog yuam kev Tsim kom muaj ib Database Kev sib txuas yuam kev ? Cov yuam kev tsim kom muaj ib database kev sib txuas yuam kev Yeej txhais tau tias rau qee yam lossis lwm qhov PHP code tsis tuaj yeem txuas rau koj MySQL database txhawm rau khaws cov ntaub ntawv nws xav tau kom ua tiav nplooj ntawv ntawd.
Ib yam li ib tug yuav nug, koj yuav kho qhov yuam kev database li cas?
Yuav ua li cas kho "Yuam Kev Tsim Kev Sib Txuas Database"
- Kauj ruam 1: Sib cuag nrog koj tus kws kho mob lub vev xaib.
- Kauj ruam 2: Xyuas seb koj cov ntaub ntawv Plugin lossis cov ntsiab lus tsis raug puas.
- Kauj ruam 3: Tshawb xyuas Yog tias Koj Cov Ntaub Ntawv Tsis Tau Ua Tsis Zoo.
- Kauj Ruam 4: Tshawb xyuas koj cov ntaub ntawv pov thawj kev sib txuas Database.
- Kauj ruam 5: Restore Qhov Default WordPress ntaub ntawv.
Ib yam li ntawd, lub npe database yog dab tsi? Cov database npe yog cov npe ntawm database thiab tus username yog tus npe ntawm tus neeg siv uas txuas nrog lub database . e.g. John Smith tuaj yeem txuas rau a database npe Database1.
Ib tug kuj yuav nug, dab tsi ua rau database yuam kev?
Cov ' yuam kev tsim kom muaj ib database kev sib txuas' qhov teeb meem tuaj yeem yog ua rau los ntawm qhov tsis raug database cov ntaub ntawv hauv koj qhov chaw WordPress, tsis raug database , los yog irresponsive database server. A database yog ib qho software uas ua rau nws yooj yim rau khaws, teeb tsa, thiab khaws cov ntaub ntawv mus rau lwm cov software.
Dab tsi yog database kev twb kev txuas cov ntsiab lus?
A Database kev twb kev txuas yog ib qho chaw hauv computer science uas tso cai rau cov neeg siv software tham nrog database server software, txawm nyob rau tib lub tshuab lossis tsis. A kev sib txuas yuav tsum xa cov lus txib thiab tau txais cov lus teb, feem ntau yog nyob rau hauv daim ntawv ntawm cov txiaj ntsig tau teeb tsa. Kev sib txuas yog lub ntsiab lus tseem ceeb hauv cov ntaub ntawv-centric programming.
Pom zoo:
Dab tsi yog qhov sib txawv loj ntawm kev txheeb xyuas qhov yuam kev thiab kev kho cov lej yuam kev?
Ob qhov kev tshawb nrhiav qhov yuam kev thiab kev kho qhov yuam kev yuav tsum muaj qee qhov ntawm cov ntaub ntawv rov qab xa mus nrog cov ntaub ntawv tiag tiag; kev kho yuav tsum muaj ntau tshaj li kev tshawb nrhiav. Parity bits yog ib txoj hauv kev yooj yim rau kev tshawb nrhiav qhov yuam kev. Ib qho parity me ntsis yog ib qho ntxiv me ntsis xa nrog cov ntaub ntawv uas tsuas yog 1-ntsis suav ntawm cov ntaub ntawv
Dab tsi yog tus yuam sij ntiag tug thiab pej xeem tus yuam sij hauv Blockchain?
Thaum ib tug neeg xa koj cryptocoins hla Blockchain, lawv tau xa lawv mus rau qhov hashed version ntawm qhov hu ua "Public Key". Muaj lwm tus yuam sij uas zais ntawm lawv, uas yog hu ua "Private Key." Qhov Private Key no yog siv los muab Public Key
Cov yuam sij tseem ceeb thiab cov yuam sij txawv teb chaws yog dab tsi?
Relation of Primary Key vs Foreign Key Ib lub ntsiab tseem ceeb tshwj xeeb qhia cov ntaub ntawv nyob rau hauv lub rooj sib tham database, whereas tus yuam sij txawv teb chaws yog hais txog lub teb nyob rau hauv ib lub rooj uas yog lub ntsiab tseem ceeb ntawm lwm lub rooj
Vim li cas kev cob qhia yuam kev tsawg dua qhov kev xeem yuam kev?
Kev cob qhia yuam kev feem ntau yuav tsawg dua qhov kev xeem yuam kev vim tias tib cov ntaub ntawv siv los ua kom haum tus qauv yog ua haujlwm los ntsuas nws qhov kev kawm yuam kev. Ib feem ntawm qhov tsis sib xws ntawm qhov kev cob qhia yuam kev thiab qhov kev xeem yuam kev yog vim tias cov txheej txheem kev cob qhia thiab cov ntawv xeem muaj qhov sib txawv ntawm cov khoom siv
Microsoft Jet database cav yuam kev yog dab tsi?
Cov lus yuam kev 'Microsoft Jet database cav nres cov txheej txheem vim tias koj thiab lwm tus neeg siv tab tom sim qhib tib cov ntaub ntawv [lossis hloov cov ntaub ntawv tib lub sijhawm]' qhia tias ib qho ntawm cov ntaub ntawv hauv zos uas CTI Navigator tau teeb tsa siv. (cov se, sau cov ntaub ntawv, phau ntawv txhais lus lossis cov ntaub ntawv hom) tej zaum yuav yog