Tus yuam sij tseem ceeb yog dab tsi? Nyob rau hauv lub ntiaj teb no ntawm databases, lub ntsiab tseem ceeb ntawm ib tug kev sib raug zoo lub rooj sib txawv cim qhia txhua cov ntaub ntawv nyob rau hauv lub rooj. Cov ntaub ntawv siv cov yuam sij los sib piv, txheeb xyuas, thiab khaws cov ntaub ntawv, thiab tsim kev sib raug zoo ntawm cov ntaub ntawv.
Xaiv tus yuam sij tseem ceeb hauv cov ntaub ntawv yog ib qho ntawm cov kauj ruam tseem ceeb tshaj plaws hauv cov txheej txheem. Nws tuaj yeem yog tus cwj pwm zoo uas tau lees paub tias nws yog ib qho tshwj xeeb xws li Social Security naj npawb ntawm lub rooj uas tsis muaj ntau tshaj ib cov ntaub ntawv rau ib tus neeg lossis - nyiam dua - nws tuaj yeem tsim los ntawm kev tswj hwm cov ntaub ntawv xws li tus lej cim thoob ntiaj teb, lossis GUID, hauv Microsoft SQL Server. Cov yuam sij tseem ceeb yuav suav nrog ib tus cwj pwm lossis ntau tus cwj pwm ua ke.
Cov yuam sij tseem ceeb yog qhov tshwj xeeb txuas rau cov ntaub ntawv cuam tshuam hauv lwm lub rooj uas siv tus yuam sij tseem ceeb. Nws yuav tsum tau nkag mus thaum cov ntaub ntawv raug tsim, thiab nws yuav tsum tsis txhob hloov pauv. Txhua lub rooj hauv cov ntaub ntawv muaj ib kab lossis ob qhov tshwj xeeb rau tus yuam sij tseem ceeb.
Primary Key Piv txwv
Xav txog tias koj muaj lub rooj STUDENTS uas muaj cov ntaub ntawv rau txhua tus tub ntxhais kawm hauv tsev kawm ntawv. Tus tub kawm ntawv tus lej ID tus menyuam kawm ntawv tshwj xeeb yog qhov kev xaiv zoo rau tus yuam sij tseem ceeb hauv STUDENTS cov lus. Tus tub kawm lub npe thiab lub xeem tsis yog kev xaiv zoo vim tias yeej muaj feem ntau dua ib tus menyuam kawm ntawv yuav muaj npe tib yam.
Lwm yam kev xaiv tsis zoo rau cov yuam sij tseem ceeb suav nrog ZIP code, email chaw nyob, thiab tus tswv haujlwm, txhua tus tuaj yeem hloov lossis sawv cev rau ntau tus neeg. Tus naj npawb siv los ua tus yuam sij tseem ceeb yuav tsum yog qhov tshwj xeeb. Txawm tias Tus Naj Npawb Xaus Saus tuaj yeem hloov pauv thaum Social Security Administration rov muab tus lej rau ib tus neeg uas raug cuam tshuam los ntawm kev nyiag tus kheej. Qee tus neeg tsis muaj tus lej Xaus Saus. Txawm li cas los xij, vim tias ob qho xwm txheej no tsis tshua muaj. Tus lej Xaus Saus tuaj yeem yog qhov kev xaiv zoo rau tus yuam sij tseem ceeb.
Lub Tswv Yim rau Kev Xaiv Cov Ntsiab Tseem Ceeb Zoo
Thaum koj xaiv tus yuam sij tseem ceeb, kev tshawb nrhiav cov ntaub ntawv tau nrawm thiab txhim khu kev qha. Nco ntsoov:
- Kab luv. Vim tias tus yuam sij tseem ceeb yog siv rau kev tshawb nrhiav thiab kev sib piv, lub ntsiab tseem ceeb luv luv txhais tau hais tias cov ntaub ntawv tswj hwm tuaj yeem ua tiav sai dua li qhov tseem ceeb ntev.
- Siv tus lej rau thawj tus yuam sij thaum twg los tau. SQL neeg rau zaub mov lossis lwm cov kev tswj hwm database txheej txheem cov ntaub ntawv hom sai dua cov ntaub ntawv hom.
- Kaws nws yooj yim. Tsis txhob siv cov cim tshwj xeeb, qhov chaw embedded, lossis ib qho kev sib xyaw ntawm cov ntawv sau nyiaj sab saud thiab qis dua.
- Tsis txhob hloov tus yuam sij tseem ceeb tom qab koj muab nws.
FAQ
Tus yuam sij tseem ceeb hauv lub rooj yog dab tsi?
Nws zoo ib yam li hauv database. Databases tuaj yeem nthuav tawm raws li cov lus nyuaj, cov ntaub ntawv nplua nuj, thiab seb koj puas muaj lub rooj yooj yim lossis cov ntaub ntawv puv ntoob, cov ntsiab lus tseem ceeb ua haujlwm tib yam.
Vim li cas tus yuam sij tseem ceeb?
Cov yuam sij tseem ceeb yog qhov tseem ceeb hauv cov ntaub ntawv sib raug zoo vim tias cov yuam sij no raug siv los sib piv thiab txwv tsis pub txhais cov kev sib raug zoo ntawm tus kheej cov ntaub ntawv.
