Video: Dab tsi yog qhov kev pabcuam nyiaj hauv SQL Server?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Cov SQL Server Service yog tus txheej txheem executable uas yog tus SQL Server Database Cav. SQL Services tuaj yeem teeb tsa kom khiav raws li tus sau neeg siv , hauv zos neeg siv , tswj cov nyiaj pabcuam , virtual nyiaj , los yog built-in system tus account.
Tib neeg kuj nug, tus account yog dab tsi?
A kev pabcuam account yog tus neeg siv tus account uas tau tsim tshwj xeeb los muab cov ntsiab lus kev nyab xeeb rau cov kev pabcuam khiav ntawm Windows Server operating systems. Cov ntsiab lus kev ruaj ntseg txiav txim siab qhov kev pabcuam muaj peev xwm nkag tau rau hauv zos thiab network kev pab. Lub Windows operating systems cia siab rau cov kev pabcuam los khiav ntau yam nta.
Tsis tas li ntawd, kuv yuav ua li cas thiaj tsim tau SQL Server kev pabcuam tus account? Yuav ua li cas ntxiv ib tus account rau Microsoft SQL Server
- Qhib SQL Management Studio siv SQL Authentication SysAdmin (SA) Account.
- Qhib Kev Ruaj Ntseg ces nyem rau ntawm Logins, xaiv "Tshaj Tawm Tshiab"
- Ntawm qhov screen nkag tshiab xaiv "Nrhiav"
- Ntawm qhov kev tshuaj ntsuam xyuas kom paub tseeb tias koj tab tom nrhiav Tag Nrho Cov Npe, ntaus lub npe neeg siv, xaiv Kos Npe, ces xaiv ok.
Tib neeg kuj nug, Kuv yuav nrhiav tau SQL Server qhov kev pabcuam account li cas?
msc rau hauv Run prompt thiab nias Enter. Tom qab cov Services qhov rais qhia, scroll down mus nrhiav tus kev pabcuam hu ua SQL Server (INSTANCE NAME). Scroll mus rau sab xis nrhiav lub npe tus account nyob rau hauv kab "Log On As" ( saib lub screenshot hauv qab no).
Qhov kev pabcuam account Windows Server yog dab tsi?
A kev pabcuam account yog ib tus account nyob rau hauv uas ib tug operating system, txheej txheem, los yog kev pabcuam khiav. Ntawm lub computer hauv zos, koj tuaj yeem teeb tsa ib daim ntawv thov khiav Local Kev pabcuam , Network Kev pabcuam , lossis Local System (raws li tau tham hauv Zaj Lus Qhia 3, “Saib xyuas Cov servers ).
Pom zoo:
Dab tsi ntawm cov hauv qab no yog qhov zoo ntawm kev siv cov khoom siv pom kev hauv kev hais lus?
Qhov txiaj ntsig tseem ceeb ntawm kev siv cov khoom siv pom hauv koj cov lus hais yog tias lawv ua kom cov neeg tuaj saib muaj kev txaus siab, hloov kev mloog ntawm tus neeg hais lus, thiab ua rau tus neeg hais lus muaj kev ntseeg siab ntau dua hauv kev nthuav qhia tag nrho
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 qhov txawv ntawm qhov yuam kev hauv kev suav nyiaj?
Muaj ntau ntau hom kev ua yuam kev hauv kev suav nyiaj. Accounting yuam kev yog feem ntau unintentional yuam kev ua thaum sau phau ntawv sau. Subsidiary nkag. Qhov yuam kev ntawm Omission. Transposition yuam kev. Rounding yuam kev. yuam kev ntawm Txoj Cai. yuam kev ntawm Reversal. Qhov yuam kev ntawm Commission
Dab tsi zoo li yog qhov kev pabcuam raug cai tab sis yog qhov phem tiag tiag?
Ib tug trojan nees yog ib qhov kev pab cuam uas tsis yog replicating uas tshwm sim raws li txoj cai, tab sis ua tau tiag tiag ua phem thiab phem ua phem thaum tua. Attackers siv trojan nees los nyiag tus neeg siv cov ntaub ntawv lo lus zais, lossis lawv tsuas tuaj yeem rhuav tshem cov kev pab cuam lossis cov ntaub ntawv ntawm harddisk
Dab tsi yog qhov dav thawj qhov kev tshawb nrhiav thiab qhov tob thawj qhov kev tshawb fawb?
BFS sawv rau Breadth First Search. DFS sawv cev rau Kev Tshawb Nrhiav Qhov tob. 2. BFS (Breadth First Search) siv Queue cov qauv ntaub ntawv los nrhiav txoj hauv kev luv tshaj. BFS tuaj yeem siv los nrhiav ib qhov chaw luv tshaj plaws hauv cov duab tsis hnyav, vim tias hauv BFS, peb mus txog qhov kawg uas muaj qhov tsawg kawg nkaus ntawm cov npoo los ntawm qhov chaw vertex